There isn't a single "official" standalone public link for the VBA library, as it is usually bundled with specific versions or available to licensed users. However, you can find instructions on the WPS Academy page :
Log in to your business account to access the "VBA for WPS" executable. 2. Manual Installation (For Free Version) vba support library for wps download
WPS Office is a powerful, lightweight alternative to Microsoft Office, but users often hit a roadblock when trying to run advanced macros: the "VBA Support Library is not installed" error. There isn't a single "official" standalone public link