does anyone know where i can get the original code for megaman6? trying to recreate the game in basic with a few alterations, but i wanna look at the original code for reference

Go in the file, select the game starter, exit, then go to the editor

Firstly, you need the ROM (will not help you here). Then you get a disassemlber. You disassemble the ROM. There. Note that NES games were made with ASM.

I doubt this will turn out great... Megaman 2 for Petit Computer was great(and a tonne of people were asking for ports) but SmileBOOM probably won't let you post a game licensed by Nintendo. (Why Megaman 6!?!)