Apple TV

my phone is giving me a code but there is nowhere to add it

That is probably the issue.

If you have an Apple TV (2nd or 3rd generation) and two-factor authentication for your Apple ID, then you may be asked to type your password followed by the six-digit verification code directly into the password field. Additionally, there is a time limit, after which the code becomes invalid.

Try this: First enter the characters of your password (do not submit yet), then manually request a new verification code, then append that code to the password (no spaces or other separating characters), and then submit. That should help you get passed the time limit.

Do you have the Apple TV box? If so, which model?

Identify your Apple TV model - Apple Support

Find your Apple TV model number - Apple Support

Else do you have the Apple TV app on a smart TV or third party streaming device? If so, which device and model?

Watch on smart TVs and streaming devices - Apple Support

When you “try to connect”, I assume that refers to signing in? What happens instead? Do you get an error message? What does it say?