Hello Aspirant,

See if you have qualified JEE-Main and secured a good rank which can take you to any of the institutions through CSAB Counselling then you should register for CSAB Counselling with your JEE-Main score from the link given below :-

https://csab.nic.in/webinfo/Page/Page?PageId=1&LangId=P

Note that CSAB Registrations will start from tomorrow i.e. 17th November 2020 and also I would recommend you that until and unless you get satisfactory seat through CSAB Counselling don't withdraw your admission from B.Sc course because if you rank will not be enough to get seat then you will have B.Sc as a backup option.

Till the registrations start for CSAB Counselling you can use JEE-Main College Predictor to predict your admission chances in different colleges of India :-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

I hope this information helps you.

Good Luck!!