Hello Morganh95,
I am a bit confused by your question but I am going to take an attempt at answer. I apologize if this is irrelevant or unhelpful,
An AppleTV+ subscription gives us access to Apple original moves and TV shows but does not allow access to other networks or providers. They do offer in app additional purchase subscriptions for other channels. I do not use that since I can link my cable provider account for those channels.
Watch movies, TV shows, and live content in the Apple TV app - Apple Support
"Other ways to get movies and TV shows
Subscribe to Apple TV+ to watch all-new Apple Original TV shows and movies. If you're eligible to receive a free year of Apple TV+, learn how to redeem your offer.
See how to get Apple TV+.
You can subscribe to your favorite premium channels in the Apple TV app, without downloading any apps.
Learn how to add other Apple TV channels.
You can also use your pay TV or cable provider to access programming in the Apple TV app on your iPhone, iPad, or iPod touch, or your Apple TV.
See how to use your TV provider on your iPhone, iPad, or iPod touch or your Apple TV.
You can even rent movies or buy movies and TV shows from the Apple TV app, then download or stream them on your compatible device.
Learn how to rent movies or buy movies and TV shows."
If you made a purchase without knowing that caused you to pay for a channel you are already paying for you can attempt getting it refunded. From what I have seen that is not something Apple will provide often but still worth a try.
Request a refund for apps or content that you bought from Apple - Apple Support
I hope this is helpful,