Barre chord
fret 1, A shapex13341
B♭sus4 is the B♭ suspended 4 chord. Its notes are B♭, E♭ and F. It is the same chord as A♯sus4. The fourth replaces the third. Resolve it down to the third for a familiar release.
x13341
688866
Numbers show frets from the low E string to the high e string; x means don't play that string.
Every B♭, E♭ and F on the first 12 frets. The filled dots are the root, B♭. Build your own shape from any nearby group.
Other B♭ chords
Other suspended 4 chords