Apple Account on Mac
Your Apple ID is an account that lets you access all Apple services. Use your Apple ID to download apps from the App Store; access media in Apple Music, Apple Podcasts, Apple TV, and Apple Books; keep your content up-to-date across devices using iCloud; set up a Family Sharing group; and more. You can also use your Apple ID to access other apps and websites with Sign in with Apple (see iCloud.com. You can also manage which apps and websites use Sign in with Apple.
Payment & Shipping: Manage the payment methods affiliated with your Apple ID, and your shipping address for purchases from the Apple Store.
iCloud: Select the checkbox next to any iCloud feature to turn it on. When you turn on an iCloud feature, your content is stored in iCloud and not locally on your Mac, so you can access it on any device with iCloud turned on.
Media & Purchases: Manage the accounts linked to Apple Music, Apple Podcasts, Apple TV, and Apple Books; select purchasing settings; and manage your subscriptions.
See all your devices. At the bottom of the Apple ID sidebar, see all the devices linked to your Apple ID. You can verify that Find My [device] is turned on for each one (see Access your iCloud content on your Mac.