@Elizabeth_
Not sure what Settings you are after, but you can look near the top of the app near the Search bar (three vertical dots lets you connect manually, or the account icon lets you configure a few things.) Otherwise, under the Devices tab, there are a few more settings.
If you let us know what you are trying to do can maybe point you in the right direction.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102