Apple Developer Blog released an update today, announcing that it will open up an App Store section for visionOS applications this fall, and invite developers to actively put relevant applications and games listed to further enrich the software of the Vision Pro headset ecology.

Since visionOS integrates and supports iOS / iPad most frameworks of OS by default, theoretically most iPhone / iPad applications can be released on the visionOS App Store.
If an app has an incompatibility, App Store Connect notifies the app developer, reminding them to change the relevant code.
Apple says nearly all iPhone and iPad apps will run on the Vision Pro headset. Developers who want to create experiences designed specifically for Vision Pro can do so using the visionOS SDK.