It's mentioned in the user guide
"Sync your songs to a Spotify playlist. Automatically add your identified songs to a “My Shazam Tracks” playlist in the Spotify app on your iPhone, iPad, or Android device.
Listen to your songs in other music apps. Open an identified song in Spotify, Deezer, or YouTube Music on your iPhone, iPad, or Android device." https://support.apple.com/guide/shazam/dev9b5e0fa36/