Airplay
How do I get a code for airplay to mirror iPhone screen to tv
Hi Naplesgal26,
Welcome to the Apple Community
Apple support have an article online that may help:
Use AirPlay to stream video or mirror the screen of your iPhone, iPad, or iPod touch
Says:
"If an AirPlay passcode appears on your TV screen, enter the passcode on your iOS or iPadOS device."
Click to view the whole article::
https://support.apple.com/en-us/HT204289
Hope this helps you :)