Hello aspirant. Thanks for connecting with Careers360. First of all, congratulations for such a good score. I would like to tell you that the second exam of JEE MAINS is yet to take place in the month of April. So you need to wait till April as the final results will be declared after the second exam only. I am sharing a link with you which consists of previous years NITs cutoffs so that you can get an estimate. 

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

Hope you found this answer helpful. If you have any other query, you can drop it in the comments section below.