PKHeX OT Font looks different on Sword and Shield (Just to clarify i used a discord bot to generate and trade me it)

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pls help me it looks illegal

 

[theSLAYER]

Normal situation, on the Switch, any JPN/CHS/CHT mons have the OTs that are typed in Roman characters stretched.

[Atrius97]

While those characters being displayed oddly is normal, your Mew is indeed illegal. I've removed the file you uploaded, but I wanted to point out that the trainer name had "Aiden" instead of "Ａｉｄｅｎ". Japanese Emerald only allows entry of full width latin characters, so "Aiden" typed on a normal English keyboard is completely illegal on your Mew.
Not only is it not "legitimate" as the filename implied, it's completely illegal due to invalid characters. PKHeX doesn't currently flag this because it would require a tremendous effort to document "full character legality" across every game, trade/transfer method, and generation.

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THXXXXXXX