GetCounter.ps1

foreach ($server in $ServerList) {
    #Generate all variables
    
    $resultCounters = Invoke-Command -ComputerName $server -Credential $Credential -ScriptBlock {
        param(
            $MetricList
        )
        Get-Counter -Counter $MetricList -SampleInterval 10 -MaxSamples 10 
    } -ArgumentList $MetricList
    $resultCounters | Export-Counter -Path $path -FileFormat $fileFormat
#...
}