I have not been able to install the Watch app on my iPhone 15 Pro Max

Zina2207 wrote:

I bought a watch, but the application does not install on the phone, I have already reset it to factory settings, and still the watch application is not installed in the app store

[Re-Titled by Moderator]

The Watch App is built in to the iPhone, unless you removed it. If you did removed it, you can re-download it form the App Store.

What exactly happens when you try to download the Watch app from the App Store?

https://apps.apple.com/us/app/watch/id1069511734