There should certainly be.
I would double check your Sonos account settings, particularly the region, to ensure you’ve got it properly set to the US. It’s an initial filter to the data that’s presented to you in the services area, although not the final one...by which I mean that each individual streamer tends to also have their own geo-location checks, for those who are reading this and thinking that they can easily get around geo-locks.
What OS is on your controller device? If it is only partially supported (eg Android 6) then you cannot configure certain aspects of your system.
Thanks for the answers.
The reason was that I didn’t have my address added to the Sonos account. Once I add it the Spotify appeared on the music services list.
Thanks again for the help!
Problem solved.