Dear Manish,

In order to get IIT Bombay your rank should be under 3000 and for IIT Kharagpur your rank should be under 6000 in genral category.

Cut off rank varies as per the branches as well.

To check the cut off rank branches wise you can refer below link

https://engineering.careers360.com/articles/jee-advanced-cutoff-for-iit-bombay

https://engineering.careers360.com/articles/jee-advanced-cutoff-for-iit-kharagpur

Good Luck!!