The F♯ melodic minor scale has 7 notes: F♯ – G♯ – A – B – C♯ – D♯ – E♯. The melodic minor (jazz minor) is a minor scale with a major 6th and 7th: a minor 3rd with the top of a major scale. Jazz players use it and its modes to colour minor chords and altered dominant chords.
F♯ and G♭ are the same pitch, so this page covers both names; the notes are spelled from F♯, the way the key is usually written. Compared with the F♯ major scale it has ♭3 (A instead of A♯).
The explorer above is set to F♯ melodic minor: the whole neck is mapped, and you can zoom into any of its 7 positions, change the labels to degrees or fingers, and hear it up, down and in patterns.