How to change birth date

Click here and follow the instructions; if an incorrect date puts you underage, use the link to contact Apple Support.

(241764)

I cannot change the date of birth of my son. I incorrectly entered the day. There is no link or whatsoever to contact Apple Support. There is only support for devices. Is there a way as a parent to edit this information ? Where can I send a request via email or online ?

The link is the text "contact Apple Support" at the bottom of the article I referenced.

(242062)