I have a 30 minute weekly catch-up with my line manager. Sometimes with two line managers.
I never have any idea what to say as my job is quite consistent - I work in different projects but the skills and working relationships aspect is pretty consistent.
I usually start by saying the week has pretty good/ok, workload manageable, project X has finished and went well etc. Sometimes I will say if the week has been particularly stressful/busy, but my manager and I then discuss that sometimes there'll be one-off weeks like that, and as long as it's not a long-term thing it's ok. When I first started I usually asked for advice - for example, I'd ask how they kept on top of their different projects and whether they had any advice. But now I've been there a while I feel pretty happy with my routine.
I have no idea what to say during these. I try and prepare but I still always run out of things to say in the first 5-10 minutes.