View iCloud Photos on Apple TV
In the Photos app 
, photos, Live Photos, and videos from your iCloud Photos appear in the Photos category in the menu bar. Your iCloud Photos albums appear in the Albums category in the menu bar.
Turn on access to photos from iCloud
Open Settings
on Apple TV. Go to Users and Accounts > iCloud, then turn on iCloud Photos or Shared Albums.
View your iCloud Photos items
Open the Photos app
on Apple TV, then navigate to the Photos category in the menu bar.Navigate up or down to scroll through the items, which are organized by date and location.
Tip: If you have a large library with years of photos, do one of the following:
Siri Remote (2nd generation): Press and hold up or down on the clickpad ring or swipe up or down a few times quickly on the clickpad to activate a scrolling timeline, then scroll to the year you want to view.
Siri Remote (1st generation): Swipe up or down a few times quickly on the touch surface to activate a scrolling timeline, then scroll to the year you want to view.
To view and scroll through full-screen photos, select a photo, then navigate left or right.
View your iCloud Photos albums
In Albums, you can see all of the albums created on your iOS or iPadOS devices, or Mac, such as Favorites or Selfies.