Summary
If you like to get data from VMWare vCenter you have to use VMWare vCenter PowerCLI.
Synopsis
Since VMWare PowerCLI version 6.5 there is no offline installer for installing but you have to download it from the PowerShell Gallery.
The following link explains how to download/install the most recent PowerCLI module (online and offline):
https://blogs.vmware.com/PowerCLI/2017/04/powercli-install-process-powershell-gallery.html
Please always use the latest version!
Discussion
If you like to get data from VMWare vCenter you have to use VMWare vCenter PowerCLI.