my jee main rank is 121003 and category OBC in UP what should be my choice

Dear parent,

As you have secured 121003 CRL rank in JEE mains 2020 from obc category, then with this much rank in JEE mains the chances are negligible for him to get seat in NITs or any iiits in whole josaa round counseling.

Even with your category rank, the chances are very hard for you or you can say negligible chance to get any NITs or iiits or gftis. And same theory applies if you apply your home state quota.

But there is some low chance that you can get in some gftis like mizoram university, gurkula kangri vishwavidyalaya, Ghani Khan Choudhury Institute of Engineering & Technology, etc. with this much rank in josaa till 6th round counselling.
Otherwise if you don't get these colleges in josaa, then you can definitely get at csab special round counseling.

Also with this much CRL rank from obc category you can't get HBTU KANPUR too.

Also check out our jee mains college predictor tool to get an appropriate idea of the colleges that you can get on basis of his jee mains rank :-
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer