How can I get the default game setting's detail in Unreal4 game

In my case, I need to make a game Quality setting ui system for our game.
so how can I get the default game setting detail data so that to set up my game settting defual UIView.

Something like following:

Default values may have an easier way to do it, but his tutorial was pretty detailed in how you can change and save them. Might be worth a look: Unreal Engine 4 Save and Load Graphics Settings using Blueprints Tutorial - YouTube

it is really thanks for you tips. I will try it.