Hello,

Don't worry!  You can re-download your admit card from the offical website of CBSE (If you are a CBSE student)  or from the official state education website.

Here by I am providing the official link for cbse website :

https://www.cbse.gov.in/

You just have to enter your affilation code as user_id and school code as your password.

Hope this helps you.

Thank you!