First of all, you have not mentioned your home state, therefore, I cannot clearly predict the best college you can get.

Secondly, your chances of getting into a good college will totally depend on your rank in common as well as category rank list. Having a close look at rank vs percentile pattern of this year I can tell you that you will surely be getting a good college with a good branch.

At last, I must say that for now, you should focus on your JEE Advanced exam, so that you may get yourself in any good IIT rather than worrying about this.

Just give your exam, and then wait for the counselling to start.

hello aspirant,

your score is really good. however every year cutoff differs stream to stream and college to colleges. you have fair chances to get north east india nits, nit puducherry, nit durgapur, nit rourkella. 

you may use career360 college predictor tool to know your probable colleges

jee main college predictor

https://engineering.careers360.com/jee-main-college-predictor