All the best 

Hi shreya , IISC banglore is one of the top most prestigious college of india here in engineering department you can only get admission by clearing jee advance within 2k rank (for general category)

Considering your rank you there is very low or i will say negligible chance that you can get into IISc banglore.Still dont loose hope luck matters a  lot give IIT exam. So don't missout the registration process. Do participate in the counselling. I hope this helps. 

hope it will help you. FOR MORE QUERY COMMENT BELOW AND UPVOTE :)