You cannot directly edit your age in Tinder if it was pulled from Facebook or your Apple ID
If your age is wrong, update your birth date on the account source linked to Tinder
If you signed up with Facebook, change your birthday on Facebook
If you signed up with Apple, check the birth date on your Apple ID
If you used your phone number, contact Tinder Support to request a correction
Open Tinder
Go to Profile
Tap Settings
Tap Help or Support
Submit a request about correcting your age
Include your correct date of birth and account details
If Tinder cannot change it, you may need to delete the account and create a new one with the correct birth date