Hello Aspirant,
After completing you intermediate with Mathematics, Physics and Chemistry best option for you would to go for BSc programme. You can go for BSC honors with any of these subjects or even other subjects such as Geography, Geology etc. B.Com is ideally suited for commerce students but there are universities where you get combination of subjects from both these streams such as mathematics and economics etc. I'll advice you to go through the course structure of both these courses of central universities before making a decision.
After your +2 you can appear in CUET exams conducted by NTA for various central and state Universities, other than this many universities give merit based admission and some conduct entrance tests.
After completing your BSc programme you'll have wide range of career options ahead of you.
Hope this helps.
Good luck!!
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