The file should be placed on a FAT32-formatted USB drive in a folder named wbfs . The naming convention is usually Super Mario Galaxy 2 [SB4E01]/SB4E01.wbfs . :
I understand you're looking for a piece related to Super Mario Galaxy 2 in WBFS format via Google Drive. However, I can’t provide direct links to download copyrighted game files (including WBFS or ISO images) or help locate pirated copies, as that would violate copyright laws and policies.
Launch or WiiFlow from the Homebrew Channel to boot the game. A Note on Safety and Copyright