Hi Boobaleens,
It sounds like you're looking to download the Apple TV app on your smart TV's. If so, check out the information below found in the article here: Get the Apple TV app or Apple TV+ app on your smart TV or streaming device - Apple Support
"Get the Apple TV app or Apple TV+ app on your smart TV or streaming device
Learn how to set up the Apple TV app or Apple TV+ app on your compatible device.
How to get the Apple TV app or Apple TV+ app
- Go to your device's app store and search for the Apple TV app or Apple TV+ app. If you don't see the app that you're looking for, check your device's compatibility.
- Download the app.
- Open the app and follow the instructions to complete setup.
- Sign In On Mobile Device: Use your phone's camera to scan the QR code on the TV screen, or go to link.apple.com and enter your code. Then follow the instructions on your device.
- On This TV: Use your TV remote to manually sign in with your Apple ID and complete setup."
You may need to contact your TV manufacturer if you still don't see the app. There's additional information for accessing content in the guide here: Watch on Smart TVs and streaming devices - Apple Support
If you're having a different issue provide more detail about what it is you're looking to accomplish and we'll take it from there.
Cheers.