Hey Tarun,

This depends on what sort of branch and which college you want. For eg- if you are just concerned for CSE branch then in 2017 cutoff was around 6000 rank ( IIT Jammu) for general till seven rounds of counselling. If you want a more popular college then you need to score as good as AIR 50 for CSE in IIT Bombay.

Rest if you belong to general category and just want to get into any IIT in any branch including pure science courses like MSc then rank upto approximately 10000 to 11000 is also good.

So do well, all the best!!!!