Get an Apple ID for your child - Apple Support
Get an Apple ID for your child - Apple Support
Sign in with your Apple ID - Apple Support
How to Use Apple's Parental Controls on iPhone, iPad, and Mac
Use Screen Time to turn off in-app purchases on your iPhone or iPad - Apple Support
How to Create An Apple ID for Your Child
Set up your iPhone or iPad - Apple Support
Change your Apple ID country or region - Apple Support
Use Quick Start to set up a child's iPhone or iPad - Apple Support
Change your Apple ID password - Apple Support
Apple ID - Official Apple Support