There is currently of Forza Horizon 5 for Android. While you may see websites offering "APK and OBB" downloads, these are typically fan-made versions, scams, or malicious files . The official game is only available for Xbox consoles and PC. Official Ways to Play on Android

First, let’s address the elephant in the room.

However, you play the full, official game on Android using cloud technology. Official Ways to Play on Mobile

A more simulation-focused approach similar to Forza.

lets you attach your phone directly to your controller for a handheld console feel. Summary of Official Platforms Official Support? How to Access No Native App Cloud Gaming / Remote Play Xbox Series X|S Physical/Digital Purchase Windows PC Steam / Microsoft Store Save 50% on Forza Horizon 5 on Steam

If you're interested in playing Forza Horizon 5, consider checking out the game on Xbox or Windows platforms.