The original manuscript had “and now behold”; while copying to the printer’s manuscript, Oliver Cowdery dropped the now. The critical text will restore the now. For other examples where Oliver omitted the narrative now in 𝓟, see the discussion under 1 Nephi 19:4 and Alma 5:6.
Summary: In accord with the reading in the original manuscript for Alma 32:5, restore the now in “and now behold / what shall we do”.