You can add Apple Music at any time, it is a separate subscription. Some regions include Apple TV with an iCloud subscription along with a reduced price for Apple Music, but I am not sure if that is what you are referring to as it is not available in the US. If you are referring to a different bundle such as Apple One, please describe if that is the case and additional information can be provided. As for just a bundle price of Apple TV & Apple Music, I have not seen one.
As for live chat, yes depending on your region there is live Chat Support. You can use the link here and under Get Online Support, choose your topic and ask your question. Initially you are given any related Support Articles and on the bottom of the page there will be a button for More Support Options. If Chat support is available, you can then start it there.
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