There is often more than one way of writing a particular note. E.g: the note F sharp can also be called G flat. These two notes have exactly the same sound and the same fingering. Therefore, either spelling of the note may occur in the written music. This is called enharmonic spelling of the same note. The C Blues scale is often written using a Gb note instead of an F# note. This example uses both versions of this note.
Here is a Blues solo in the key of A minor using the Blues scale. Remember that any scale can be used in many different musical styles. It all depends on the context, the sound you use and the way you play the notes. The more you listen to different players and analyse the way they use the scales, the more ideas you will get to help develop your own playing.