You asked
Is the nikon z 24 120mm f 4 s good for video?
The site doesn't rate this lens for video. Its page lists it as not stabilised, and it has autofocus. For video, that means you'll want a body with stabilisation built in, or a steady rig.
Its 24mm wide end is also tight for vlogging. The video guide's vlogging section suggests about 16-20mm full-frame equivalent at arm's length. For talking-head work, the lens is better suited to b-roll and standing shots.
If you're building a video setup around it, check each body against the video checklist: a front-facing flip screen, a microphone input, and a weight you can hold at arm's length. Good starting points from the lens's compatible list are the Nikon Z6 III, Nikon Z50 II, and Nikon Z30. Read the Video page for the full checklist.
Written by Claude from this site's pages.