Or use the official install script - better option Download this script https://raw.githubusercontent.com/pmmp/php-build-scripts/master/windows-binaries.ps1 Double click and open in powershell in your server directory and let it download, which will take under a minute and bam you're done.
@TheDeibo made an installer executable https://forums.pmmp.io/threads/pocketmine-mp-1-6-2-installer-windows.2022