I'm confused and worried, please help

I don’t know if this is the right place to post this, feel free to move it.

Today I decided to finally buy Forza Horizon 3 Ultimate Edition and I did it on microsoft.com
I only have a PC with Windows 10, not an Xbox One.
Will I be able to play this with all the features that comes with the Ultimate Edition, even though I bought it on the Microsoft.com website and not Microsoft Store app?

And if not, will a refund be possible?
I’m very worried about the big amount of money I just spend, please help me out.

You are totally fine, my friend. Don’t worry! You will get all of the perks of getting the ultimate edition as long as the microsoft account you used to buy the game is the one you use to sign into your computer. And also make sure your PC can run the game, it is going to be very graphics intensive. Refunds are also available to anyone before the release date.