Property:  WshEnvironment.length
object.length

The length property is read only and returns a Long value which is the number of items in the collection.

The following VBScript code uses the length property to report the number of system environment variables currently defined.

Code:
Set objShell = WScript.CreateObject("WScript.Shell")
Set objSysEnv = objShell.Environment("SYSTEM")
WScript.Echo "There are", objSysEnv.length, "System environment variables."

Output:
There are 14 System environment variables.
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