That's a fairly interesting match up..
I'm curious to know whether Apo's moves are even blockable. If does not look like it. Perhaps he could do so with something like Tastsumaki or simply by disturbing his rhythm (airslash dodges)? Need more feats..
Dodging seems to be as difficult, if you do not have some kind of high speed mobility move (like Geppo for example).
You could argue for an air slash counter maneuver, but Apo probably wouldn't just stand there and take them. In fact it actually seems to be the opposite, dodging air slashes seems to be an easier task than dodging his moveset.
Getting closer is also not that easy, if he sends some "bam/don" moves at you, while you are sprinting at him. Afterwards he could, again, go and widen the distance, while his opponent needs to get it together after taking such a surpisingly powerful hit..
You can probably sprint through all that with full body hardening or in general very high durability (awakend Zoan, Jozu, or just being juggernauts- Kaido, BM, transformed Queen and Jack for example), but for that we would also need more feats.
I actually thought Zoro would take this at around high diff, but Apoo actually is pretty decent, even if he was obv meant to get his hype this chapter, before he gets at it with Kid. Sound isn't really something you can encounter. If his moves were shockwave based, it would simply just turn into a air slash vs shockwave battle, up until Zoro gets close to him.
Making a case for non G4 Luffy is as difficult imo. For now I'd say it could go either way.