Every fingering that fits a hand
4122
moderate
4124
moderate
412x
easy
4674
moderate · barre
xb99
easy
What is true of it
Bsus2 is B, C♯ and F♯ — 1, 2 and 5 counted from B.
These are also the notes of F♯sus4/B and G♭sus4/B. Which name is right depends on what is underneath and what came before — the notes alone do not decide.
The easiest of the 5 fingerings below is 4122: 4 fingers, held at the 1st 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 5 need a barre.
Where its notes are on the neck
The brass dots are B, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
Bsus2/C♯
x122
Bsus2/F♯
x674
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.