I have been following the course. I think a step is missing. I cannot see billing information. I am guessing that since the video was created that a new permissions step is required. I get the error when I click the billing tab that "There was an error while loading /billing/linkedaccount/?project=new-project-280221
I ran into the same issue, for mine, it took another 10mins then it became available. Also, you can go to IAM&Admin / Policy Troubleshooter to check your permission. I hope this helps.