What if email is not available
What if child emails not available during family sharing
Why isn't their email available? Are you trying to add the child to Family Sharing or are you trying to do something else? More information would help.
See if anything here helps.
Family Sharing - Set up on iPhone. -
Family Sharing - Set up Family Sharing in the Apple TV app. -
Family Sharing and Apple ID for your child. *
Set up - your child’s iPhone, iPad, or iPod touch. *