I'm following the tutorial with Firebase Cloud Messaging. The tutor is using token from Project Settings -> Cloud Messaging. This is his screen:
What I missed here? What should I do to get this token or maybe create one?
It seems you're following a tutorial that is using the Legacy FCM API.
Just click the ⁝
icon to go to Cloud console.
Then, enable the Cloud Messaging API.
After this, it will show the server key in the Cloud Messaging tab.
However, I would recommend using the HTTP v1 API as this has the updated server features. You can read more about it here. This requires a different setup than the Legacy API but you can follow this guide on how to set it up.