https://vsbattles.com/vsbattles/102380
Kaguya vs. Shinnok
Kaguya can't do anything. Shinnok can copy all of Kaguya's abilities, has planetary reality warping, time manipulation, low-godly regen, and much more. A pretty one-sided fight.
https://vsbattles.com/vsbattles/275767
Kaguya vs. Mega Man
They literally had to nerf Mega Man at every corner. His abilites far exceed Kaguya's on every scale along with having absolute zero attacks and space-time manipulation. Again, Kaguya can't do much here and the other character is massively nerfed to keep it from being an outright stomp.
https://vsbattles.com/vsbattles/290201
Kaguya vs. Deoxys
Deoxys has been scaled to Dwarf Star Level and Sub-Rel. Kaguya stands zero chance.
https://vsbattles.com/vsbattles/45705
Kaguya vs. Link (Composite)
Link has Sub-Rel combat and reaction speed. Kaguya can't keep up, on top of Link possessing time related powers and many others. This is a stomp.
https://vsbattles.com/vsbattles/352515
Kaguya vs. Yukari Yakumo
Another fight in which one side had to be massively nerfed. However, while speed had been equalized, people argued that the projectile speed of Yukari could supposedly be around lightspeed on top of various other haxes that her ability allows. If she can really remove the boundary between anything (with a few known exceptions), Kaguya stands no chance. She'll get decimated, especially if she can launch projectiles at lightspeed.
https://vsbattles.com/vsbattles/355306
Kaguya vs. Darth Vader (Eu)
While a couple did go for Kaguya, it was generally stated that Vader had an insane speed advantage and possessed hax couldn't deal with: mind control, speed (sub-rel), atomic manipulation, and much more. There's no way Kaguya can handle this.
- I apologize for making such a long list. However, a majority of the matches Kaguya is put in is against people far beyond her reach. Either physically or through hax. She's God-tier in her own verse, not so much outside of it.