Get Powershell Version

 1PS /Users/example> $PSVersionTable
 2
 3Name                           Value
 4----                           -----
 5PSVersion                      7.0.2
 6PSEdition                      Core
 7GitCommitId                    7.0.2
 8OS                             Darwin 19.5.0 Darwin Kernel Version 19.5.0: Tue May 26 20:41:44 PDT 2020; root:xnu-6153.121.2~2/RELEASE_X86_64
 9Platform                       Unix
10PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
11PSRemotingProtocolVersion      2.3
12SerializationVersion           1.1.0.1
13WSManStackVersion              3.0