Dear candidate,

This is to let you know that you should not completely rely on a preparatory rank as it is given by a small percent of the total students and is thus unreliable. But if you were to get this rank in JEE Advanced then you would probably get into probably some of the best IIT's like IIT Delhi or maybe even IIT Kharagpur. In these colleges there is a high chance that you would get any branch except CS at a rank of about 3500. You can use a JEE Advanced college predictor like the one linked below

https://engineering.careers360.com/jee-advanced-college-predictor?icn=QnA&ici=qna_answer

Hope this answer helped you.