Computers & IT (Non-Engg)

The question you have asked has already been asked by someone and it has been already answered by one of the experts on Shiksha.
https://ask.shiksha.com/i-m-in-class-12th-from-commerce-stream-can-i-do-ethical-hacking-course-qna-1876604

Yes, it doesn't matter which attempt it is.

Congrats for joining BCA programme in CRM University. It is fine that you have focused your career in IT domain. From the very beginning of the BCA mind it always BCA is your present but MCA is your future. In IT Industry you will get a good position and a better pay package equivalent to that of B.Tech, if you complete your MCA. You may get a job after BCA but that should be your target one. Give your best effort - acquire domain knowledge and finally achieve optimum score in BCA and then go for MCA.

Visit the Shiksha link given below and check out some good colleges for BCA their placement details and reviews:
https://googleweblight.com/i?u=https://www.shiksha.com/it-software/colleges/bca-colleges-Lucknow&hl=en-IN

Visit the Shiksha link given below to get the details about BCA colleges in Mumbai:
https://www.shiksha.com/it-software/colleges/bca-colleges-Mumbai

Options:
1. Go for PhD abroad. Good scholarship is available, good enough to lead a decent life and save some money.
2. Apply for jobs in startups in Hyderabad and Bangalore.
3. Apply for JRF position in good research institutes.

Your rank is good but it's tough to get VIPS. VIPS is the most reputed institution of IPU and you are outside Delhi candidate so there is a little chance to get VIPS.

Yes, you can do BCA after 12th. But for BCA maths is compulsory.

Maths is not compulsory for BCA.