Since the game has been delisted, you cannot buy it digitally on modern storefronts. However, there are still safe, legal ways to enjoy the game: Forza Horizon 1 & 2 Online Services Closure - Forza.net
– A .txt file named like that typically contains a product key or activation code for the game Forza Horizon 2 (released for Xbox 360 and Xbox One). forza horizon 2 license key.txt file
If you genuinely want to play Forza Horizon 2 , here are the only legitimate methods. None of them require a mysterious .txt file. Since the game has been delisted, you cannot
There are several types of Forza Horizon 2 license keys, including: Since the game has been delisted