For best results link your shazam account to a playlist then set this recipe up to link to it
If
New track added to a playlist
This Trigger fires every time a new track is added to a playlist you specify.
Then
Save a track
This Action will search for a track you specify and save the first matching result to Your Music on Spotify.
ID c2QKXN6F
Explore more great ways to automate Spotify and Spotify