I got 84 percentile in jee mains paper 2, what would be the expected rank ? Is there any chance to get good college?

Hi,
Congratulations!!
As 1,45,386 students appeared this year for the examination according to that by using the Rank Formula (100-Total percentile)*145386/100 your rank will be around 23261
This is your approximate rank.
As far as concerned about the college it depends to what category you belongs.
For more details please visit the below links
.https://engineering.careers360.com/jee-main-rank-predictor
https://www.careers360.com/college-predictor

All the best !!!