How to download the App Store

Use App Library to search App Store app, see this Apple article:

Organize the Home Screen and App Library on your iPhone

Organize the Home Screen and App Library on your iPhone - Apple Support           

If you have find the app, tap & hold on the app, then drag to the Home screen & drop it.

i have a new laptop and it doesn't have the apple app store, how do i download in order to get other apps