I got total 55 % in class 12th

Hii,i will help you.Well for that-
An UPSEE counselling, you have to appear in UPSEE Exam and qualify the exam.
There are only required 12th passed with 50%.
According to UPSEE rank, you can join the counseling of UPSEE.
hope this will be helpful.
Goodluck for your future.