Hello

20.76 percentile seems to be a quite low score. Officially Cut off is not released yet.
So its a bit difficult to predict as of now. But since the score is a bit low. So qualifying chances seem to be a bit low.
But still there are no issues you can try again in the next attempt. Keep Practising and work harder.
You will definetly reach the destination.

Also for rank prediction you may use the rank calculator.

https://engineering.careers360.com/jee-main-rank-predictor

For any other queries. Please comment below.

Thankyou.