You may be looking for a digital scan of the original printed instruction booklet (the "paper" manual) that came inside the Wii game case.
The .zip extension indicates it's a compressed folder. Inside, you would typically find a .wbfs or .iso file, which is the actual game data used by Wii emulators (like Dolphin) or homebrewed consoles. Super-Mario-Galaxy-Eu-Nintendo-Wii.zip
If you are looking for a specific , you can find official and fan-archived PDFs on sites like the Internet Archive or Nintendo's official support site . Are you trying to find a PDF of the manual , or You may be looking for a digital scan
Downloading game files (ROMs) is generally considered a violation of copyright law unless you own the physical disc and created the backup yourself. Super-Mario-Galaxy-Eu-Nintendo-Wii.zip