What should be an ideal overall score to get 95+ percentile? (can you tell me what was the score for 95+ percentile in 2020) ?

depends on the difficulty level of the exam

This year it could be around 72

I am scoring in b/w 17-27 in VARC sectionals. Tried these 3 strategies: I) Attempting as max as possible (scored 17) 2) Go as slow as possible (100% accuracy: 24 marks) 3) Be dynamic and choose as per the difficulty; (20-27) Iske upar nae jaraha score ab.. Any suggestions, please... Target is 35+

i think you all will do better because cracku prepares you for the better

Currently I am scoring around 15-20 in CRACKU VARC sectionals. Is it very low? Is it possible to score 30 in real CAT?

from 15-20 to 30 in actual exam is very rare chance but you can get around 20's

Yes it is possible if you quickly learn where you are going wrong. If its about selection of questions, yes you can. All the best.

I AM GETTING 65-70 % IN CRACKU MOCKS HOW GOOD IS THAT FOR ACTUAL CAT ?

You'll do good. Cracku mocks are on the tougher side compared to CAT, and they are preparing us for tough papers quite naturally; and as less people are attending the mocks, percentile will drop. But you're capable of scoring 95%ile in CAT for sure and who knows, even more. Keep calm, don't panic. All the best.