I think this issue has been seen by other users. And SU2023 only supports recommended resolutions and display scaling. (If as Dave suggests, you’ve set a custom scaling, change it back to what your system recommends. If this does not work, reduce the scaling and tray again.)
The Graphics info in your profile is was of no help to us. (Thank you for fixing this!)
Related, the Measurements toolbar (what @nmason shows) is also too small, see:
Dimension box not working in 2023 - #20 by DanRathbun