Built a campaign this morning and it is not showing here yet

There's a wait and an hour is within it. Structure changes come in on the regular update cycle rather than the moment you make them, so a campaign created this morning will typically appear within the next few hours. It is not watching Google Ads in real time - it asks periodically. If you want it now rather than later, there's a manual refresh that pulls immediately. One thing that surprises people: a brand new campaign with no spend yet will appear in your structure but show nothing in the performance views, because there's no performance to show. That's not a sync problem, and it resolves itself the moment it gets its first impression.

Appeared on its own by early afternoon. Good to know the manual refresh exists for next time - I build in batches and would rather not wait four times.