To install MacOS High Sierra on the VMware Workstation virtualization program, you first need a VMware Unlocker program. Because VMware Workstation does not support installing a MacOS operating system.
Therefore, the VMware Unlocker program is used to unlock the VMware Workstation lock.
To install MacOS High Sierra and MacOS Sierra on VMware Worsktation 14 Pro, take a look at the following related articles.