I’ve been summoned to jury duty three times. The first time was about 20 years ago. I happened to be unemployed at the time (I had been laid off when my company started letting go of non-billable positions in order to attract someone to acquire them). So I really didn’t mind. I sat in the courthouse, watched videos telling us our duties and how we were doing our civic duty (narrated by Raymond Burr, of all people). Finally after being there for a number of hours I was told that I would be on a case where a young person was charged with a moving violation. We waited longer and then the judge came out to greet us, and it started out something like this:
“Thank you all for coming here to do your duty. Now go home!”
It turned out that the main (or perhaps only?) witness had decided not to testify, and without that testimony the case was dismissed without prejudice. That was all the detail I knew.
The second time wasn’t very long ago, I think it was right before Covid, because I don’t recall having to wear a mask or anything. It was probably 2019. I went into a big room, filled out paperwork, and was given a number. I sat around for hours until being told there were no more cases for the day, I wasn’t needed, and I could go home because my duty was fulfilled.
The last time was a year or so ago, and like @Smapti I live in Washington, so all I had to do was call each day to see if I was needed, and I wasn’t. It sure beats sitting in a room all day doing nothing.
On a related note, while this didn’t involve jury duty one time I was almost a witness in a court case. A former boss of mine was being sued by my former employer. This was the case where my work was hacked and I was in the middle of it, and worked for months as a witness with the FBI, and so on. Anyway, both the plaintiff and defense wanted me to testify. I told both of them the exact same thing; I will testify if you want me to, but if you put me on the stand I will tell the complete unvarnished truth. I’ll tell only what I know, and not speculate on what I don’t know, and I really don’t know very much outside of technical details. I could tell that each one of them wanted me as an advocate, and I made it clear to both that I would be impartial. Ultimately neither one wanted me as a witness and I didn’t have to go.
I was the main person in the middle of everything; I realized we were being hacked, I took measures to stop it (unplugging routers and shutting things down), and I had many notes and grabbed a lot of logs for things I had passed onto the FBI as network admin. So you’d think I would be a pretty good witness, but obviously not what either side wanted. 
(I’m glad; I didn’t want to do it anyway, but I really would if someone said they absolutely wanted me.)
Oh, and if you want to know what I actually thought, I’m totally sure my former boss was the hacker. He built the network by hand, he knew credentials to do it, and he even told us shortly before he was fired that he could easily hack the place if he wanted to. 