Hello, Aspirant. You mentioned your percentile and your caste in the question. Based on your percentile, your AIR should lie within the range of 189562 - 213095. As per previous years' data and your rank, there is l ittle to no possibility for you to get chance in any NITs. For the SC Rank, the Common Rank List will be anywhere around 150K-160K , and a Percentile Target of at least 85-86 is required in order to be eligible for NITs.

If you want to know your eligibility based on your JEE Main rank and percentile then check out JEE Main 2021 College Predictor:

For more information about JEE Main cutoffs, check out this article: https://engineering.careers360.com/articles/jee-main-cutoff

I hope this information is enough for you to clear your doubts.

Thank you and all the best for your career and future.