After going through validating events, you'll want to verify your implementation. The validation server validates that your events have the correct structure, but to verify that they are being sent correctly to your property, you'll need to do the following:
If you're not seeing your events after going through these steps, check troubleshooting for common implementation errors.
Send an event from a client
Choose your client:
Send an event to your property
Check the Realtime view
After sending an event using the Measurement Protocol, check the Realtime view for your property. Events typically show up within a few seconds.
Go to the realtime view by opening Google Analytics, then going to Reports > Realtime in the left navigation. You'll want to focus on the bottom charts, such as "Event count by Event name" and "Conversions by Event name."