BBA

Congrats for your score of 94% in 10th, maintain the consistent performance till 12th exams.
You want to get minimum 50% marks in the 12th standard which will ensure that you will easily get the admission into one of the leading management schools in our country.
There is no minimum criteria for admission in a BBA, admission process is basically based on the merit.
3-year professional undergraduate course in Business Management = BBA
Admission to the course is generally entrance exam based. The entrance tests are organized at national, state or university level by various authorities. A merit list is prepared on the basis of qualifying examination or entrance examination.
Most of the colleges conduct separate entrance exam for admission to BBA course. Some of the entrance exams conducted for BBA course are as follows:
AIMA UGAT - AIMA Under Graduate Aptitude Test (UGAT) is a national level examination conducted annually by All India Management Association (AIMA). It is conducted to screen capable candidates for admission in various courses such as BBA, BCA, Integrated MBA, BHM, B. Com etc.
SET - SET or Symbiosis Entrance Test is a common test conducted by Symbiosis International University for admission in undergraduate courses in the fields of Law, General, Design, Engineering and Health Science.
IPU CET - IPU CET 2017 (IP University Common Entrance Test) is a university level entrance exam conducted for admission to 60 undergraduate, postgraduate and research courses.
Admission to BBA course is also done on the basis of Lateral entry i.e. entrance to the course in second year. Universities like Lovely Professional University and Annamalai University provide this option. The eligibility for this is qualification of first year examination from a recognised university with a minimum aggregate score of 50%.

Complete your class 12th so that you are completely eligible to get admission in BBA or BBM and you may choose any one from management stream and you can choose any subject for your BBA or BBM as Finance, Marketing, Business Administration but you should choose according to your own choice means whatever you like in your life.
If you complete your BBA as a Bachelor's degree then you need to prepare for any entrance test so that you could get admission in MBA in any reputed institute and you may prepare for any one of the CAT or MAT entrance test because if once you qualify any one of these tests then you may easily get admission in any highly reputed institute and that is why you need to prepare well and hardly for this exam.
You should join any good coaching institute to prepare for your entrance test and give more than 10 hours everyday for study then you can score over than 90% marks in CAT or MAT.

Hi,
After your diploma you can go for BBA.
A BBA (Bachelors in Business Administration) or a BBM (Bachelors in Business Management) is a graduate level management degree that is solely designed to enlighten student's management skills at the Bachelors level. The degree is designed to develop practical managerial skills, communication skills and business decision-making capability. Thus BBA/BBM institutes also assist students with summer internships in well-known corporate organizations so that the student receives the much necessary industry exposure.
The course duration is usually three years. However, it may vary from institute to institute.
Eligibility: The eligibility for this course is 10+2 in any stream
You can now give entrance exam for colleges in which you are interested.
https://www.shiksha.com/bba/articles/your-career-after-doing-bba-bbm-blogId-4552