Find out if remote wipe has worked (Google find my device)
If it connected after you had the command prepared for it, it would continue to wipe the phone until all user data and apps were deleted once it synced, the only thing that can stop it after it starts is a force restart in which I believe it would continue trying once turned on again.

Once the phone is wiped there is no user data left including any login credentials, there is no way to know if it was successfully wiped and no way you can track it by yourself using google or any other online tracking solutions. If you still have the SIM active you should contact your provider and they might be able to track the phone with your SIM.