Hii Gautam!
BCA refers to Bachelor's in Computer Science and Bsc means Bachelor's of Science. You get various courses in BSc such as bsc zoology, botany, maths, etc., And you can opt for completely different course BCA. For BCA you can be a science , commerce or arts students in class 12th, but for BSc you ought to be a science student in class 12th. Hope this helps.
Good luck!

Hello Aspirant,

BCA stands for Bachelor in Computer Application while BCS stands for Bachelor in Computer science. BCA is vocational course while BCS is a degree course. BCA will give you opportunity to learn and use that application while BCS will give you opportunity to create the programme and applications.

For further information, you can check the link below,

https://www.careers360.com/question-which-is-better-bcs-or-bca