If you can't find it: It might be hidden by Screen Time restrictions or simply deleted. You can redownload it for free from the official App Store listing .
: Authenticate the purchase using your Apple Account credentials, Face ID, or Touch ID. Accessing Your Purchased Music Buying and Downloading Music on iTunes how to buy songs on itunes on iphone
: Locate the purple iTunes Store icon on your home screen. If you can't find it: It might be
: Tap the Music tab at the bottom of the screen. how to buy songs on itunes on iphone