Press Win + R
Go to

Open Input.ini and add

Save the file but don't make it read-only. The game will save your last used commands in there. You can change the bind to whatever key you want.

Go to this website to find out what the mappable keys are called in Unreal Engine
👇
https://docs.unrealengine.com/udk/Three/KeyBinds.html

If the console doesn't open, try a different key.

A few useful commands

All UE4 commands can be found here
👇
https://digilander.libero.it/ZioYuri78/

njoy