Apple TV plus
I subscribe via I phone but it does not show up,on the to monitor - only regular Apple TV is on screen
What screen are you referring to?
If you’re subscribed to Apple TV plus then it syncs across other supported devices, signed in with the same Apple ID
Devices you can use with the Apple TV app and Apple TV+
https://support.apple.com/en-ca/HT210740
Apple TV App–Supported Devices