Hey there

If you have taken mathematics as your main paper then as you have failed in maths so your overall result is fail you need to pass the exam then only you will be eligible for exams like neet and others.

So if you don't like maths I would recommend you to go in medical as you have good marks in biology. You can also completely change your stream to arts and can join history and other courses in Delhi University or bhu or other colleges in the country.

Good luck