The marks and ranks correlation obviously changes and differs from year to year as it depends on various factors like number of candidates appearing and also the paper level difficulty, etc. But by some general assumptions by previous years analysis, what I can guide you is if you have marks in the range of 200-204 then your rank might be in between 5001-5500. Similarly 205-210 you might have rang in between 4500-5000.

Don't think of ranks much as of now honestly speaking and focus more on giving the bestest version of you so that you score much well and get a seat in the choice of your college and the choice of your branch comfortably.

Best of wishes. Thank you.