Hello Dear,

According to you, you scored 91 percentile in JEE Mains then your rank would be around 92070 - 103500 and you have OBC-NCL category quota.

You can predict rank from the link given below

You do not mention  branch in which you want to admission.

You can  predict  colleges from the link given below

To more information about JEE Mains :-

JEE Main 2021 Exam - Answer Key (Released), Results, Paper Analysis, Question Papers (careers360.com)

Hope this information helps you...

Best of luck :)