Do I have to watch TV or play video games to make Apple One worth it?

If you get the individual Apple One Plan then its waste if you don't watch a movie and play game since it's half of what you are paying for. So the answer would be No, its not worth it in that case.

If you get the Premier Plan, then the answer is Yes it is worth it, since you get more bang for your buck even if you don't watch Apple TV+ or play a game from Arcade.

As to your question, "A customer support number" for what exactly? There are support numbers here for different countries: link-> Contact Apple for support and service - Apple Support

Signing up for Apple One however is done directly on a device.

Very few actual Apple employees here. This is a user to user forum, and most of us are just Apple device or service users that volunteer our time to help other users.

Depends on the version of Apple One you are planning on getting.

The Individual Apple One costs $14.95 and includes Music, Tv+, Arcade and 50GB of iCloud. TV and Arcade are half the package. While paying for just Music and 50GB of iCloud on their own, would be $9.99 + $0.99, for a total of $10.98. You save about $4 bucks if you know you never plan on using TV+ and Arcade.

If you however get the Premier version, then it costs $29.95 for Music, Tv+, Arcade, 2TB of iCloud and News+ and Fitness+ a month.

Getting Music, 2TB of iCloud, News+ and Fitness+ on their own would cost you $39.99. So its a better option to get the Apple One bundle in that case since you save $10.00 bucks overall a month even if you never use TV+ and Arcade.