Hello hello,
Please mention the college name and the courses for which you are interested to take admission. As the result has not been announced yet by CBSE. But for general the admissions for session 2021-2022 are started and majorly it will held in the month of Septmember. Admissions to IIT will be held in the month of October.
Without mentioning any course and college it is quite difficult to answer accordingly. Hope you get this.
Thank you:)