What is iCloud Settings?
Use Settings on iCloud.com from a supported browser to see and change some iCloud settings. You can:
See the Apple ID you used to sign in to iCloud.com. It is listed below your name in the top section of the iCloud Settings window.
Sign out from every browser where you are now signed in. For instructions, see Use iCloud.com.
If you are using another iCloud feature, click the feature’s name at the top of the iCloud.com window, then click Account Settings.