$String = "*something*"
$Domain = "COMPANY.LOCAL"
$NearestDC = (Get-ADDomainController -Discover -NextClosestSite).Name

#Get a list of GPOs from the domain
$GPOs = Get-GPO -All -Domain $Domain -Server $NearestDC | Sort-Object DisplayName

#Go through each Object and check its XML against $String
Foreach ($GPO in $GPOs) {
    Write-Host "Working on $($GPO.DisplayName)"

    #Get Current GPO Report (XML)
    $CurrentGPOReport = Get-GPOReport -Guid $GPO.Id -ReportType Xml -Domain $Domain -Server $NearestDC
    If ($CurrentGPOReport -match $String) {
        Write-Host "A Group Policy matching ""$($String)"" has been found:" -Foregroundcolor Green
        Write-Host "-  GPO Name: $($GPO.DisplayName)" -Foregroundcolor Green
        Write-Host "-  GPO Id: $($GPO.Id)" -Foregroundcolor Green
        Write-Host "-  GPO Status: $($GPO.GpoStatus)" -Foregroundcolor Green
    }
}