Truth be told, there's no way to permanently delete the App Store from the iPhone. Remember that this is one of the essential native applications that cannot be deleted and there is no icon with an “x” once you start the oscillation of the removal application. The App Store app isn't one of the apps that can be deleted, but with iOS 14 it can be removed from the home screen. If you have iOS 14, go to the app library (swipe left past your last home screen).
From there, you can press and hold an app and slide it back to the left to the home screen. If the App Store icon is missing and you're wondering how to restore it, here's how to recover the App Store on your iPhone. This is a good way to hide apps from the home screen, maybe to clear clutter or because you don't want others to see the apps you use. One of the most common causes of missing an App Store icon is that it is located inside a phone folder or is hidden in the application library.
I tried to follow your instructions to return the symbol of my app from the App Store to my home screen, without success. When you've returned the app to the home screen, note its location and your phone's restrictions to ensure easy access to your App Store in the future. These applications are embedded in the iPhone cake, so to speak, and therefore constitute a part of the operating system itself rather than an additional application. If you want to continue sorting things the Marie Condo way on other devices, try reading How to Delete Apps on Apple TV and How to Delete Apps from Apple Watch.
These steps can also be used for other missing or deleted applications. Here's how to add an app back to the home screen. The App Store can't be deleted, so it's just a matter of figuring out why the App Store icon is missing. For example, in iOS 14 and iOS 15 it is possible to simply delete an application from the home screen and, at the same time, keep it on the device and access it through the search and application library.
You can follow the steps in the tutorials below to remove Apple and third-party applications that you have installed. You'll be able to tell which pre-installed apps can be removed and which can't by holding down the apps and seeing what options are available.