Installation:
1. Download TFC Installer
2. Open TFC Installer and select your game folder
("C:\Program Files(x86)\Steam\steamapps\common\Transformers Fall of Cybertron") 
3. Extract "Skybound Optimus (FoC Optimus + WFC Megatron)" folder to desktop
4. Click "Mod Folder" in TFC installer and go to the extracted "Skybound Optimus (FoC Optimus + WFC Megatron)" folder. Open it & select the "MyMod" folder
5. Then Click "Update Transformers Fall of Cybertron"

Uninstall:
1. Open TFC Installer
2. Click "Uninstall all"

If you want a visual guide on how to install I made a video that might be able to help you install it

Visual Guide- https://youtu.be/B7TS-ZJGP48?si=62Q9T6OArbJffaBN