strComputer = "."
instances = 0
processName = "chrome.exe"
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
Set colProcess = objWMIService.ExecQuery("Select * from Win32_Process")
For Each objProcess in colProcess
If objProcess.Name = processName Then instances = instances + 1
Next
wscript.echo "Process - "&processName&" has "&instances&" instances running."