90.01 percentile in jee main is good score.It is very dificult to inform the exact rank but your approx rank is in between 87000 and 88000.It is hard to get seat in NITs.But you may get seat in some perticular branch and it depends on which branch you should like to choose.Check previous year cutoff to take an idea.It is just approx rank.

It would be difficult to provide you the exact information about the qualifying score or Admission cutoff as JEE Main is being conducted twice by NTA for the first time. As a total No. of 1,45,386 candidates had appeared for January Session, Using the Formula (100-your score)* 1,45,386 / 100- Your Expected rank will be 14,538. With this rank the chances seems less to get a seat in NITs.

You can check the previous year cutoff to take an Idea about its cutoff.

https://engineering.careers360.com/articles/jee-main-cutoff-for-b-arch-b-planning

NOTE: This is only a prediction. NTA will merge the scores obtained in first and second attempt by candidates of JEE Main Paper 2 2019 for the compilation and preparation of overall merit/rank list. The rank will be released on 30th April, 2019.

Good Luck!