Hey Brainias1
Firstly, welcome to the forums! 
Here are some resources you should find useful.
Animating with the Control Rig Sample Project | Inside Unreal
Animating with Control Rig in 4.26 | Inside Unreal
Using Control Rig in Unreal Engine
Animating MetaHumans with Control Rig in UE | Unreal Engine
Using the MetaHuman Facial Rig in UE | Unreal Engine
And lastly, the Control Rig Documentation
I hope they help! 