BCA

According to the information provided, you already have a graduation degree in Bachelor of Computer Application. Based on this degree, you may get the following jobs if you have an interest in tech fields:
1. Data Analyst
2. Associate, Developer Support
3. Web Developer
4. Software Tester
5. PHP Developer
6. Software Developer
However, as you mentioned that you are pursuing a Diploma in pharmacy, which is a medical field, you may get the following jobs after completion of your Diploma courses:
1. Pharmacist
2. Pharmacy associate
3. Medical Representatives
4. Lab technician
5. Clinical Data Manager
Therefore, you can apply for a job in your field of interest and be hired based on your performance in the interview.

That totally depends on what you want to do after graduation. I mean if you want to work for a company as a developer then you should opt for BCA but if you want to be a professor then B.Sc. Is a good option for you. It doesn't mean that you cannot work for any company after B.Sc. But you have to work harder than others. The reason why I am telling you is that in B.Sc. The focus is on theoretical knowledge rather than BCA where you will learn about applications. Below are some of the best Private Universities:-
BITS Pilani, ICT Mumbai, Mumbai. VIT Vellore, Vellore. Thapar Institute of Engineering and Technology - [TIET], Patiala. ITER Bhubaneswar, Bhubaneswar. LDCE Ahmedabad - LD College of Engineering. Geeta University, Panipat
MSRIT Bangalore - Ramaiah Institute of Technology. BMSCE Bangalore - BMS College of Engineering.

BCA has more scope than B.Sc. IT. With the rise in demand to build more IT sectors in India, job opportunities in IT sectors are increasing day by day. In India, the BCA course is an affordable and cost-effective education that polishes the existing qualities and builds quality experts in the IT industry. Students opting for this subject/course have to deal with several computer languages. Hence, finding the best college with the best faculty becomes necessary to mold your skills and knowledge better and to complete your education thereby stepping into the world of job. List of some of the Top and best private colleges in India are the following
LNM Institute of Information Technology, Jaipur
Vellore Institute of Technology, Vellore
Manipal Institute of Technology
SRM Institute of Science and Technology, Chennai
Dayanand Sagar college of engineering, Bangalore
Geeta University, Panipat, RV college of engineering, Bangalore
BMS college of engineering, Bangalore.

As per my understanding B.Tech from CSE stream would be best option. Every organisation or company requires to be present digitally, be it banks, hospitals, education, or railways. Computer Science and Information Technology are one of the most evergreen professions and will continue to rise in the years to come. In CSE field nowadays the field expanded so much that you have many options to choose your career in the CSE itself. Some of the famous fields in the CSE branch is Artificial intelligence, Machine Learning, Android Development, Automation, Data Science and much more you can say. IT industry in India is booming with the advancement in technology. Many IT companies, having recruited students from various institutes of repute, find the need to provide training to these new recruits, for a certain amount of time and with specific skills, to perform in their work environment. This includes companies such as Infosys Ltd. , which runs the Campus Connect programme, Wipro and Tata Consultancy Services, to name a few. Best University in Delhi NCR:
SRM
GD Goenka School of Management, Gurgaon
BML Munjal University, Gurgaon
JKBS Gurgaon - JK Business School
BVIMR New Delhi - Bharati Vidyapeeth Deemed University Institute of Management and Research
Geeta University, Panipat
Management Education and Research Institute, Delhi
FOSTIIMA Business School, Delhi
IIMR Pharma Business School, Delhi.

Of course yes. MBA after BCA would be best option. MBA is considered one of the prestigious programs with a vast majority of students enrolling for different courses under it. There are several specializations in MBA like MBA in Banking, MBA Healthcare Management, MBA in Airport Management, MBA in Information Technology, MBA in Entrepreneurship, etc. MBA also has a great scope and future career opportunities in the field of human resources. Below are some of the best Private Universities:-
BITS Pilani, ICT Mumbai, Mumbai. VIT Vellore, Vellore. Thapar Institute of Engineering and Technology - [TIET], Patiala. ITER Bhubaneswar, Bhubaneswar. LDCE Ahmedabad - LD College of Engineering. Geeta University, Panipat
MSRIT Bangalore - Ramaiah Institute of Technology. BMSCE Bangalore - BMS College of Engineering.

Yes you can do MBA after BCA. MBA is a broad field of study as it can lead you anywhere you want to specialize. MBA is one of the most popular management courses in India, and it has its prestige. The demand for MBA grads is witnessing a steady increase due to the number of startups India has begun to invest in. Pursue an MBA at one of the top MBA university in Panipat, Delhi NCR, India which focuses on honing the natural sense of talent and innovative work of students. GU programme is industry-based quality and business skills are essential to building more informed decision-makers who can meet the challenge of the world by work. The spirit of providing an improved learning environment given the vibrant idea of bringing success under dense conditions is something that adds to our legacy of being one of the best universities in Panipat, Delhi NCR. GU provides you MBA degree with many specializations mentioned below:
Finance
Marketing
Hospital Management
Retail Management
E-Commerce
Sports Management
General Management
Information Technology
Human Resource Management, Many more
GU placement cell prepares its students to establish themselves to the growing complexities of the business world. They offer a strong conceptual foundation giving them real life working experience. Placement cell has full-fledged training and placement cell in which more than 150 MNCs participate every year.

The university in Chandigarh, which is located in Northern India, is home to some of the region's second-best facilities. The school is responsible for providing all of the essential facilities. On campus, you may use Wi-Fi almost wherever you go. Every single one of the lecture halls and labs is equipped with cutting-edge technology and every resource that can be required. The mess and the canteen both provide food that meets rigorous requirements in terms of both quality and cleanliness. Students who are interested in joining the professions of software development, testing, or analytics will find that the curriculum of a Bachelor of Computer Applications degree programme is tailored to meet their educational needs. Students who have finished the educational equivalent of high school "plus two" from any approved university are eligible to enrol in the Bachelor of Computer Administration BCA which is an online degree programme that lasts for three years. Through discussions with industry professionals, recent BCA graduates, IT recruiters, and others, we've designed and crafted this programme to bridge the gap between classroom theory and real-world practice. This will be accomplished by bridging the gap between classroom theory and real-world practice. A little under ninety-five percent of students were successful in securing work during the most recent placement season. It was possible to make as much as 36 lacs per year or as little as 9 lacs per year in terms of salary.

You can change your college in BCA second year, but this transfer is subject to a few conditions:
First, you can change colleges only on the basis of valid reasons like a transfer of parents. Second, it will be allowed if both colleges are under the same university, except for exemption. Third, it will be possible only if there are vacant seats available, unless you have quota seats, like a defense quota. You will have to follow the following process to change the college of Nagpur under the same university to the college of Pune: (1) Obtain a No Objection Certificate (NOC) from the college authorities where you want to transfer. (2) You will need written permission from the college principal where you are applying. Also, there is a separate procedure at every college; some colleges may demand a Certificate of good conduct or a Certificate of attendance from the principal of the college you are changing. Therefore, you will need to contact the admissions officers at both colleges with regards to the admissions process.