The Script below will list the version status of every site in your farm.
Note that as the script is below, it only reports, you’ll need to uncomment 3 lines if you want it to make the changes.

It’s a good idea to run the script once or twice before you do that, so you have a log of what settings were.

Add-PSSnapin microsoft.sharepoint.powershell -ErrorAction SilentlyContinue

$timestamp = get-date -format "yyyMMdd_hhmmtt"
$filenameprefix = "VersionScriptoutput"
$logfile = ("{0}_{1}.csv" -f $filenameprefix, $timestamp)

$header = "ListURL,Enabled"
$header | out-file -filepath $logfile

# tip - the script as is will pull every sharepoint site (at the IIS level) in your farm.
# if you want to filter this to a single IIS site,
# remove the # from the middle of the next line and enter your site's url

$iissitelist = get-spwebapplication # | where {$_.url -eq "https://www.yoursite.com/"}
foreach ($iissite in $iissitelist)
{
	foreach ($SiteCollection in $iissite.sites)
	{
		write-host $SiteCollection -foregroundcolor Blue
		foreach ($oneweb in $SiteCollection.allwebs)
		{
		   write-host $oneweb.url -foregroundcolor Green
		   #now this is is where we look at the lists
		   $lists = $oneweb.lists
		   foreach ($list in $lists)
		   {
			  if($list.EnableVersioning -eq $false)
			  {
				  write-host  "$($iissite.url)$oneweb/$list is a not using versions" -foregroundcolor yellow
				  $msg = "$($oneweb.url),$($list.rootfolder)"	
			      $msg | out-file -filepath $logfile -append
                    # note!
                    # if you actually want to make the changes, uncomment the next 3 lines!
				  #$list.Enableversioning = $true
				  #$List.MajorVersionLimit = 3
				  #$list.update()
			  }
			  else
			  {
				  Write-host  "$($oneweb.url)/$($list.RootFolder) has versions enabled! " -foregroundcolor green
				  $msg = "$($oneweb.url)/$($list.rootfolder),true"				  
                  $msg | out-file -filepath $logfile -append
			  }
		   } 
		}
	}
}