How do I get Apple TV on my tv

Please click https://www.apple.com/apple-tv-app/devices/ for a list of supported devices that will get Apple TV. In short you will need one of the supported Smart TVs listed or get an Apple TV 4 or Apple TV 4K or another supported devices such as one of the supported Roku's.

See

Set up the Apple TV app on your smart TV or streaming device - Apple Support

https://www.samsung.com/us/support/answer/ANS00082624/

Samsung smart tv

See if your specific model is listed here: Apple TV app-supported devices - Apple

What model TV do you have?

Are you interested in the offerings of the Apple TV app?

Are you interested in the content of an Apple TV+ subscription?

Are you open to the idea of attaching a HDMI device to your TV or AV receiver?

Are you interested in the capabilities of the Apple TV set-top box?