Contrary to the belief that "free" requires no user action, Avast mandates registration for two primary reasons:
AFA-RG-2024-01 Version: 1.0
Select (or "My subscriptions") from the menu.
: While the initial internal license is typically set for 12 months, it renews itself automatically for another year at each expiration point without user intervention. How to Confirm Activation
You do not need to "register" Avast Free Antivirus anymore.