Realtime Events Create only

I want to listen to create document only! How can I achieve that?

In realtime you're not listening to specific events but rather to channels.

But, what could be your solution is to use Webhooks in which you can set a out-webhook based on single event

is there any examples that I can rely on to do that?

For which part? the webhook?

yes..

I want to listen to only create document event of that database not on update/delete

This way you can create a webhook

In this example the webhook will run only when the user.create event was fired

But you'll need some endpoint that will listen to it