Hello Aspirant,
No, just securing qualifying cut-off percentile does not ensure your admission to any of the NITs but the qualifying cut-off percentile is the cut-off percentile needs to be cleared by any candidate to sit in JEE-Advance and it is released along with the final result of JEE-Main and for JEE-Main 2022 the final result will be released after both the attempts will be completed and the final result will be on the basis of your best score amongst both attempts.
As the cut-offs are released along with the JEE-Main 2022 result so for now you can get an idea from JEE-Main 2021 qualifying cut-offs that are enlisted below :-
==>> Common Rank List (CRL) - 87.8992241-100.0000000 Percentile
==>> GEN-EWS - 66.2214845-87.8950071 Percentile
==>> Other Backward Classes (OBC-NCL) - 68.0234447-87.8950071 Percentile
==>> Scheduled Caste (SC) - 46.8825338-87.8950071 Percentile
==>> Scheduled Tribe (ST) - 34.6728999 87.8474721 Percentile
==>> PwD - 0.0096375-87.8273359 Percentile
Note that in above table it is not the actual cut-off for JEE-Main 2022 but previous year's cut-off.
You can check out previous year's cut-off trends from the link given below :-
https://engineering.careers360.com/articles/jee-main-cutoff
To have a list of all those colleges which you can get based upon your marks, category, and state you can use JEE-Main College Predictor:-
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer
I hope this information helps you.
Good Luck!!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile