Hello Yash!!

As you know that Jee advanced has not a fixed maximum marks plan. Every year jee advanced paper takes different marking system.

And other thing that your category rank depends on many factors like

1. How many student appeared in the exam
2. Paper's difficulty level
3. And also on your exam day

Every year cutoff score takes some change. For exact data you can search on official site of jee and also on many coaching institutes.

You should improve in yourself every day without worry about rank. And in SC category you also advantages.

All the best for your future:)