There are exactly zero Tesla stores in Spain and not even one service center in the country, but there is now one Supercharger there.
In late July, Tesla celebrated the grand opening of its first Supercharger in Spain. It's just a 4 stall site, but it's a start.
Here are the details on the Girona, Spain Supercharger:
UPDATE: Tesla has already opened a second Supercharger station in Spain. Details below:
Tesla's Second Supercharger In Spain