had to wipe my laptop now what

Hello
I had to wipe my laptop and reinstall back to factory from disks. When logged into my avast it shows im protected but I know I’m not. Do I download avast premier free trial and then insert my license again and do I have to have it sent to my email or can I download it from my avasr?
Sincerely RJ

Resend License https://www.avast.com/resend-license-paid.php

See avast FAQ section https://support.avast.com/