If I can, I want to make it free on the Microsoft store.

But when it's finished, (and I don't loose interest) I will at least post the .appx file and the tool I created from scratch for converting Godot 4 to Godot 3 as in this, the play button does not work ¯⁠\⁠_⁠(⁠ツ⁠)⁠_⁠/⁠¯