function getPermits()
{
  Logger.log('Starting permits');
  var permits =  SpreadsheetApp.getActiveSpreadsheet().getActiveSheet().getDataRange().getValues();
  Logger.log('Got permits: ' + permits [0][0]);

  return permits;
}

<script type="text/javascript">
   function onSuccess(numUnread) {
    alert('You have ' + numUnread[0][0]
       + ' unread messages in your Gmail inbox.');
      document.getElementById("id2").innerHTML = numUnread[0][0];


}

   function onFail(numUnread){
   alert('Script failed!');
   }

 google.script.run.withSuccessHandler(onSuccess).getPermits();
 google.script.run.withFailureHandler(onFail).getPermits();
</script>