Used Keka (Mac extraction tool) with “Legacy ZIP encryption” mode. Modern ZIP tools sometimes mishandle AES encryption on older ZIPs.
Many "collections" come as a single .ttc file rather than individual .ttf files. font collection download zip fix
Once you’ve fixed your ZIP download and extracted your collection, don’t install 5,000 fonts at once. This will significantly slow down your computer's boot time and software performance. Used Keka (Mac extraction tool) with “Legacy ZIP