Go to Special:Preferences and it will tell your when your account was registered. Hopefully you can do the math from that point.
Okay, thanks!
Go to Special:Preferences and your registration time will be shown.
Replace USERNAME with your username: https://community.fandom.com/api.php?action=query&list=users&usprop=registration&ususers=USERNAME
Your account was created on 11 May 2020, so you almost reach your first anniversary.
What do you think?