Hi aspirant, on 120-125 most probably your JEE mains rank will range in between 100K-120k. And on this rank you probably may not get into any NIT, but you can surely ensure your admission in any state government engineering colleges, colleges like BIT Mesra HBTU like colleges.

Also you can predict your college on behalf of yourself with the help of college predictor tool  by career 360(link mentioned below);

https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna

All the best.

Thank You.