+1 For all those people who love shoving enemies, at level 5 currently your fighter/paladin/barbarian/ranger will still only be able to shove once per turn. However, if shove is modified to match RAW (replace an attack with a shove) then you'll be able to shove twice per turn!
If your fighter Action Surges, then they could shove 4x in a single turn at level 5!
If you get hasted, then you'll get another shove attempt! (Possibly 2 more depending on how Larian implements the interaction between Haste and Extra Attack)
At level 11, your fighter could shove 3x per turn, 6x if action surged, 7-9x if Hasted!
None of the above happens with a bonus action shove. It will always be only once per turn, except for I suppose rogues maybe with their additional BA...?