To find the full filename and path of a running script use:

$MyInvocation.MyCommand.Definition

Just the filename

split-path $MyInvocation.MyCommand.Definition –Leaf

Just the path

split-path $MyInvocation.MyCommand.Definition -Parent

references:

https://stackoverflow.com/questions/817198/how-can-i-get-the-current-powershell-executing-file