How to install??

This may be a trivial question but I'm a bit frustrated on being stuck on something like this. But how do you actually start or play the game?

I sat for 6 hours getting through the 10 discs, when the installation finishes Microsoft Store opens. But FS isn't in the microsoft store menu, or on my desktop, or the start menu, or anywhere I can see.

First time I did it I redeemed my code and eventually got in the game, but now since I already "own" FS2020, nothing else happens with the Microsoft Store menu that allows me to play.