Dear Aspirant

First of all  for IIT admission you have to give jee advanced . From jee mains you are eligible to get NITs college ( rank wise )

JEE Main 2021 Expected Cutoff

Note -with these cutoff you are eligible to give jee advanced

If you want to know more about it check out the link given in below

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-cutoff/amp

And

If you want to preparation of jee

I hope it will help you https://learn.careers360.com/knockoutfull-jee-main-january/?icn=jee-main-knockout-lpage&ici=search-section_c360-home

Thank you