How to download App Store?
How to download App store
[Re-Titled by Moderator]
iPhone XR
You can’t download the App Store app because it cannot be deleted. If you could remove the App Store app, you would not be able download anything including the App Store app … if it was possible to remove.
If you don’t see the App Store, perhaps you have restricted it in Screen Time. See this for more information.
Use parental controls on your child's iPhone, iPad, and iPod touch - Apple Support