Hi Shivam.
Firstly, for pcm students the most trending option is engineering. And if you have a great hold over these two subjects, I.e., maths and physics then it's the best option.

Then you can also go for bachelors in maths or bachelors in physics. You can apply for Delhi university for these bachelor degrees.

Then there is also an option of architecture! If you're interested in it, then there is a lot of career scope here.

For anymore queries, revert back.
Good luck
If you like the answer, upvote!