This is a paid asset, but now you can download All Settings Pro Free.
Detail this asset from Unity Store: Original Link
All Settings Pro v1.0.5
This asset have all quality plus extra useful settings and input system, useful to save time to write and configure all by yourself, the package also has a menu UI of example that can use as final pause menu settings .
_______________________________________
– Save and load settings, save settings in one scene and load and apply on start in other.
– Input Manager, can easy change the input keys and save it.
– Brightness setting, easy and optimize method for implement the brightness settings.
– Hide and Show animated, include for you can easy integrate for work with your project and show / hide the menu when press a key.
_______________________________________
Professionally designed and animated example menu, you can use as a final for your game, just drag and drop within the canvas and go.