He,

You have not mentioned that you want to know about common aptitude test , please mention below.

But as per government details it is said that they will be implementing this test for admission but decision is not yet final.

The government decided to implement a single entrance test in accordance with the proposals put forward by the National Education Policy (NEP), 2020

The government is planning to implement a Common Aptitude Test for admission in all central universities including Delhi University (DU), Jawaharlal Nehru University (JNU) and Banaras Hindu University (BHU) starting academic session 2021-2022.

But please wait for the official announcement.

Hope this helps!!