I couldn't unzip it with 7-zip nor Winzip either, which I know happens regularly when the original zip was made with Winrar (they say it's a .zip compatible with all other zip softwares, but with how often other softwares can't actually unpack those files, I'm pretty sure that they do something to push people to keep using Winrar).
Anyway, point is: install winrar. https://www.win-rar.com/download.html?&L=0
It's a paid/trial version, but you just have to install, unpack, then uninstall. I kept both the zip and actual folder on my computer, for archiving afterward.