Degree

Being a B.Sc graduate, you would have studied LINUX during your graduation. The syllabus of Linux at Mumbai University forms a strong base for RHCSA (Provided you have studied it logically).
There is a huge scope. Linux being open source is used a lot, mostly by organizations and government too. Also, most of the servers are Linux based. There are very few people who opt for RHCSA. Most of the IT graduates look for web development, app development or software testing kind of roles. A few go for hardware and networking or CCNA. And very few for RHCSA. This will also open up a window for you to explore cyber security and ethical hacking. Go for it. All the best.

Hello Hitansh,
It is indeed great to know a person who is interested in teaching profession. Of course, it is a very noble and good profession to be in. You get opportunity to shape up the mind of the future of the country and also simultaneously pursue some or the other research in your own domain. About your query about B.Ed. I can tell that B.Ed is required when you are thinking of teaching in schools. However, for teaching in colleges you require a minimum post-graduation in the subject and preferably M.Phil or Ph.D. So, my advice to you would be to take up post-graduation in your field of studies and after completion take up a job in a college and then simultaneously attempt your doctorate. This way you can achieve the required degree and will be able to progress in your teaching career and colleges or universities. Best wishes to you.