Can't seem to find what font Nintendo used for the "Only For," if it exists.

Any help would be appreciated!

Redtowns  Suggeriti da conman1985 
Handelson Two  Suggeriti da conman1985 

No digital matches. It's likely custom brush lettering, originally drawn by a lettering artist for use on SNES box cover art and later reused for the N64 covers. Fairly common to find lots of custom brush lettering in 80s and 90s media - action film posters and comics in particular.

Something similar:

https://www.myfonts.com/fonts/lettersiro/redtowns/regular/

Also similar:

https://www.myfonts.com/fonts/mika-melvas/handelson/two/

Similar To The N