Cant install any games useing xbox app or store something to do with Visual c++ 2015 uwp...

After following all of your steps, I open the Xbox App, sign in with the same account as the Microsoft Store, and when I try to install a game, it installs "Microsoft Visual C++ 2015 UWP Desktop Runtime Package" from the Microsoft Store and my game is still stuck at "Downloading 0%".
Not sure what else to do, I feel like I've tried everything.

Haha, yeah. I was laughing a bit when I read "nuked" but I'm glad to hear that the fresh installation worked for you!

Now all the games are showing you that error?

If yes, usually it can be fixed resetting gaming services and Xbox app: (Also, check for apps and Windows updates)

Open Settings, click Update and Security and then Windows Update;

Click Check for Updates;

Click the Download and Install Now option, if available (Install optional updates as well)

Also, check the Microsoft Store for any updates on the Xbox apps and its services and update everything too.

Now, sign out from your account on both Xbox app and Microsoft Store and do this:

Go to windows settings > apps > search for gaming services app > click on it and select advanced options.

After that, click repair and then reset

Then do the same for the Xbox app:

Go to windows settings > apps > search for Xbox app > click on it and select advanced options.

After that, click repair and then reset

Finally do this:

Step 1: Open the Run window by pressing Windows + R key.

Step 2: Input WSReset.exe in the Run window and click OK.

Step 3: Then a command prompt window will appear. After a few seconds, Windows Store will open.

Sign in again on both Microsoft store and Xbox app with your account and try again

saddly its been like that for a few hours now

Try giving it couple minutes to see if maybe something's downloading on the background