Hello Aspirant,
It would be difficult to tell you the exact about the qualifying cutoff & admission possibilities as JEE Main is being conducted twice by NTA for the first time. Based on this score the chances seems less to get a seat in NITs. You can use JEE Main College Predictor tool given below.
https://engineering.careers360.com/jee-main-college-predictor
You can also check the previous year cutoff with the given below link.
https://engineering.careers360.com/articles/jee-main-cutoff
Good Luck!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile