Four key signatures have G sharp and E sharp in them: F sharp Major, D sharp minor, C sharp Major and A sharp minor.
That would be the key of A-sharp minor, the relative to C-sharp major, which contains seven sharps. The leading tone is G-double-sharp.
G Major or e minor. The sharp would be F sharp.
The key with 6 flats is G flat major (this is the same as the key with 6 sharps: F sharp major). The relative minor is e flat minor (also called d sharp minor).
D major has a key signature of F sharp and C sharp D minor has a key signature of B flat
E sharp minor
The key of E minor has one sharp: F sharp. It is the relative minor of G Major.
D sharp minor
Four key signatures have G sharp and E sharp in them: F sharp Major, D sharp minor, C sharp Major and A sharp minor.
The parallel minor of F-sharp major is F-sharp minor. A parallel minor key is the one with the same tonic note.
That would be the key of A-sharp minor, the relative to C-sharp major, which contains seven sharps. The leading tone is G-double-sharp.
G-sharp minor (generally) has five sharps, however in the melodic minor both E and F♯ need to be raised, so the key signature for G-sharp melodic minor has 5 sharps and 1 double sharp (G♯, A♯, C♯, D♯, E♯, and an Fx).
Firstly, there is no B minor chord in the key of F sharp minor. Rather, it is A sharp minor chord. And you can use any chord at the end of a chord progression. Why not!
G Major or e minor. The sharp would be F sharp.
The key with 6 flats is G flat major (this is the same as the key with 6 sharps: F sharp major). The relative minor is e flat minor (also called d sharp minor).
The corresponding minor key to G Major is e minor. The key signature will be the same, one sharp: F#.
A major, or F# minor