Every fingering that fits a hand
x677
easy · no 5
bbcx
moderate · barre · no 5
bbc9
hard · no 5
What is true of it
F♯7sus4 is F♯, B, C♯ and E — 1, 4, 5 and b7 counted from F♯.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 3 fingerings below is x677: 3 fingers, held at the 6th fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
1 of the 3 need a barre.
It leaves out the 5. 4 strings cannot carry 4 notes, and the 5 is the one this chord can lose without changing what it is.
1 string stays silent.
Where its notes are on the neck
The brass dots are F♯, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
F♯7sus4/B
4604
F♯7sus4/C♯
6677
F♯7sus4/E
9b99
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.