Creating a settings file and open it in view

Hello,

I've been trying to create a settings file and after my research right now I have a settings file and an app config file. However, I think that I'm not doing something right. I'm not sure if the setting is created the right way because the icon is different and I don't know if I have to connect the app.config and the settings file in some way. Still, the settings can not be found on the project prop. Could someone give me a hand here?