can i use zoom on a 2021 MacBook pro

I see no reason why you can't. This Zoom support article says macOS 10.14 or higher:

https://support.zoom.us/hc/en-us/articles/360016688031

A new MBP should ship with macOS 11.X "Big Sur," which is higher.

There may be a newer version required for Big Sur, which does a LOT of re-arranging from previous versions.

Sure. Lots of folks do.

Are you having a problem?

GLS_jr wrote:

I just purchased it. worked fine on my old MacBook, but now telling me the app needs to be updated.

What app needs to be updated? Update the app.