Do I have to respond to an uncontested divorce filing?

My ex dropped off a complaint for uncontested divorce at my apartment. We’ve been separated for 6 months and aren’t fighting over anything. Do I have to do anything with this paperwork or respond to it in some way? I don’t contest the divorce but I don’t want him to get something he shouldn’t get in the divorce because I don’t assert my rights. The other issue I have is some of my personal belongings are still at his house. I’ve asked him to bring them back to me or let me come get them several times but he puts me off. Should I request my stuff back in the divorce process? I don’t want him to get a final divorce and then refuse to give me my things.