Hey Sanket, 

You have a very good score. It is a little less than 50% but you will have fair chances to get into IIT Bombay for a non popular branch. You might get Chemical Or Civil in the final rounds of counselling. 

You can predict your rank using this link

https://engineering.careers360.com/jee-advanced-rank-predictor?icn=JEE_Advanced_rp&ici=JEE_Advanced_article_view_sticky

After preducting your rank,  you can predict your college and branch using this link

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-advanced-college-predictor/amp