Download ZpteroQuickLook on github https://github.com/mronkko/ZoteroQuickLook/releases. Note that the suffix of the file need to change from .zoteroplugin to .xpi
On Windows, you must first install a QuickLook tool. By default, ZoteroQuickLook is set up to work with QuickLook. Download link: https://github.com/QL-Win/QuickLook/
Note that you must install QuickLook using either the .msi installer or through the Windows Store. If you use the .zip version of QuickLook, you must also set up a custom view command.