Hello aspirant

To get a CSE seat in NITs in JEE mains 2020 you need to secure a rank below 10K for top NITs that is you need to score more than 140 marks. To get a CSE seat in lower NITs you need to secure a rank less than 50k that is you need to score more than 95 marks. Some of the lower NITs which offer CSE for higher ranks are NIT Agartala - 98,197(General and Neutral); NIT Meghalaya - 59,052(General and Neutral); NIT Puducherry - 56,609(OBC-NCL).

For more information, you can refer to the below link.

https://engineering.careers360.com/articles/jee-main-cutoff

Hope this answer helps you.

All the best!!!!