Does Screech, Growl, Tail Whip, etc work on Shedinja?

don't see why not

they're not really useful on him though

Never tested but wonder guard would make it unaffected imo.

if you try to use one of these move on a shedinja, you're doing it wrong

It's something I thought of, if screech works against wonder guard, so does foresight. If foresight works, wonder guard spiritom and sableye can be hit by it, allowing a super effective fighting type move.

look at me, i can google shit

Wonder Guard only allows super effective moves to hit.
It does not prevent stat-altering moves, such as Tail Whip, from hitting or from lowering the Pokémon's stats. Also, it does not prevent damage from weather conditions or entry hazards. Moves which cause status ailments, such as PoisonPowder, can still be used. In addition, the Pokémon can still be afflicted with status ailments and receive damage from those status ailments. Wonder Guard does not block Struggle from hitting, nor does it block moves whose types do not come into play for damage calculation, such as Beat Up. In Generation IV, Fire Fang hits even if it is not super-effective, though this was removed in Generation V.
Wonder Guard cannot be Skill Swapped or copied by Role Play, but it can be Traced. In addition, Wonder Guard cannot turn into Mummy.

it can, since you can soak Shedinja for it to have less weaknesses