hello venkatesh,
They will provide the information through the official portal of ipu, log in to your account. All the information or notification regarding the admission and counselling session in which they will allot the colleges to you according to the rank will be uploaded. So stay tuned to the official website of IPU. All the important dates are also updated on careers 36o website. you can also check here. Just keep yourself update on IPU website so you don't miss any chance of getting admission.

I hope this helps you out. If there is anything that I can help you with, then please let me know.

All the very best and have a brilliant future ahead.

Till then stay home and stay safe.