I've been there
I've also done or experienced whatever is being discussed. A: "I got back to my car a mere three minutes after the meter expired, and I still got a parking ticket!" B: "Ugh, I've been there." Failing a test? Oof, I've been there!
I’ve been there
sent. I know from experience what you are talking about. I’ve been there. You don’t need to spell it out for me.