This is used to track Journey Emails from Google Sheets

SFMC-Journey-Email-Tracking

<script runat="server">
  Platform.Load("Core", "1.1.1");
  try {
      var paramtskey = Request.GetQueryStringParameter("tskey");
      var parammetric = Request.GetQueryStringParameter("metric");

      if (parammetric === "all") {
          var tsd = TriggeredSend.Init(paramtskey);
          var triggerSendTracking = tsd.Tracking.Retrieve();
          var tsTracking = Stringify(triggerSendTracking);
          if (tsTracking.length > 2) {
            var outputmetric = Stringify(triggerSendTracking);
          } else {
            var outputmetric = '{"CustomerKey":"' + paramtskey + '"}';
          } 
      }
   
    else {
          var outputmetric = '{"Name":"0","Unique":"0"}';
      }
      Write(outputmetric);
  } catch (ex) {
      Write("error message: " + ex);
  }
  </script>