Downloading games that I own from microsoft store to pc

In order to download a game on the Xbox and redownload it for free on the PC, the game has to be a Play Anywhere title. Not all games are eligible. Call of Duty and Assassin's Creed are not Play Anywhere titles and would be to be purchased for the PC in
order to play them on the PC. https://www.xbox.com/en-US/games/xbox-play-anywhere?xr=shellnav

On PC the sharing of games works differently than on the console.

On PC, your Microsoft Account needs to be a member of the Microsoft Family together with the account owning the games. You can add each other to the Microsoft Family at
https://account.microsoft.com/family

After that, sign in on the Windows 10 PC with your own Microsoft Account. Then have the person owning the games come over, and open the Windows 10 Store. Sign out of your account from the Windows 10 store, and have the person owning the games sign in on
the store.

Then have them download the game(s) they own and want to share to your PC.

After the games have been downloaded, the person signs out of the store, and you sign back in.

Hello Trevor, the Xbox PC apps is a client that helps you to install owned games from the Microsoft store on your PC.

Please download it and then follow the previous procedure

You stated you have the game for the console, but have you purchased it for the PC? If not, you can purchase the game from the Microsoft Store app. Minecraft is not Play Anywhere, so you won't be able to download it on the PC just for owning it on the console.

There is no way to transfer Xbox games to PC.

You can however download Xbox Live enabled games for PC from the Microsoft store on Windows 10. You will also be able to download them from Steam and other PC stores sometime in the future.