I am scoring around 20-36 in previous years xat papers and getting bogged down by the scores?Any suggestions?

no need to worry Because 3-4 days are left only, so just analyze what you have done and just work on your strategy which you are going to apply on the D-DAY and find what works for you.

three days left for the exam, it's not the time to fret about scores.33-35 is the cut-off ryt. Just Relax & hope for the best. See what you have done differently when you scored 36 in mocks