Can I share my iTunes purchases with a family member
Can I share my iTunes purchases with family members on family share
Set it up as described in the previously supplied article: How to share purchases with your family - Apple Support
If you need more help setting up a family group, see: Set up Family Sharing - Apple Support
Then see: How to download apps and content that your family members purchased - Apple Support
and/or Download family members’ purchases on iPhone - Apple Support