It's no longer possible to edit your profile on the VRChat Home website to toggle displaying age verification status. You used to be able to switch between "Hidden", "Verified" (later removed as an option), and "Verified 18+" on the website.
At the moment, "Display Age Verification" can only be toggled in-client.
This missing feature has led to some user confusion about their Age Verification status going "missing" after an update:
Please bring this feature back to avoid further confusion.