Hello Zeeshan. I would like to tell you that an estimated rank can be determined right now as the final results have not been released yet. So based on certain factors, we can tell only the expected rank and not the exact. I am sharing a link with you which will help you in determing your expected rank.

https://www.entrance360.com/engineering/how-to-calculate-rank-for-jee-mains-2019/

I hope you fohnd this answer helpful. Good luck.