Fire enough stuff in the air and eventually you'll accidentally hit something

No doubt some have but I doubt the US is issuing any numbers and I wouldn't trust Iran's...ymmv

To be as accurate as possible, things as they are, that includes some that have been hit by Iranian ordinance while on the ground.

Hitting a jet is theoretical until you have to do it.

It took the Iraqi resistance months to figure out how to properly ambush American convoys, but, boy, once they figured it out, it was off to the races.

Reports of a U.S. F-35 making an emergency landing after suspected Iranian fire are deeply concerning and highlight how quickly regional tensions can escalate. If confirmed, this would mark a serious development with potential global implications.

actual combat against a determined, well-armed enemy. No one really knows how the planes will perform.

I recall back when Reagan was president, two F14s engaged with 2 Libyan Russian made fighter jets and shot them down. At my command the general reaction was, "they work!".