Can I still score maximum if I am weak in quants and don’t know quants basics

We're on the same boat. I also come from a weak maths background, so I completely understand how overwhelming Quants can feel.
But don't let your mock scores discourage you. They are for practice and improving.
Start with the basics, take one topic at a time (especially Arithmetic), and practice consistently.
It may feel slow initially, but there will be improvement if you stick with it. Build your concepts and score well.

you need to clear sectional cut off bro