Enable screen time
Using Screen Time to set content privacy restrictions and manage in-app purchases
Go to “Settings” and tap “Screen Time”.
Controls & Settings guide
You can enable restrictions to stop your children from using specific features and applications on an iPhone or iPad, including blocking access to iTunes, restrict explicit content and in-app purchasing. You can also limit access to the camera and sharing of photos
An iPhone or iPad device and account
See more resources and articles to help children stay safe online.