Remember the reports early on that the number of infected could be an order of magnitude more than had tested positive. So I think we could reasonably suspect that a lot more people had covid and didn't know it, than were ever tested as positive. And what we're told now about natural immunity, if you had covid with symptoms, you have some immunity to it now. And it's probably long lived.
And the "authorities" are ignoring this and still pushing the vaccine for people who already had COVID, which is one of the strongest reasons I don't trust the vaccine. Especially when I've heard many medical experts who say that after having been infected with COVID it's unlikely someone would reinfect with serious symptoms. Unlikely not impossible. About the same as those being vaccinated can still get COVID.