No No the 751 portion is not short-term capital gain it is ordinary income which is different.
Turbotax does not use box 20 for the most part. those that apply have to be entered somewhere else in Turbotax. Like royalty depletion which must be entered on schedule E. QBI information that must be entered later as you go thru the k-1 entries. the only reason to enter a 20Z item is so Turbotax asks about QBI later
