Enlarging the font

I’m running Audacity 2.3.3 under Kubuntu 20.04. Is there any way to enlarge the font used for scale markings?

Windows guy here. I assume you have tried this: https://askubuntu.com/questions/585941/how-can-i-increase-the-size-of-icons-and-fonts-in-kubuntu

I’m not sure exactly which “scale markings” you are referring to, but there was an issue in older versions of Audacity that caused some of the fonts to appear too small on higher resolution monitors. This issue has largely been resolved (significantly improved) in the current Audacity 3.0.3 version.

This is the same font that is used for the legend “Start and End of Selection” at the bottom of the screen, for example.

This is the font that is used for the legend “Start and End of Selection” at the bottom of the screen. for example, and seems to be used almost everywhere.

The Kubuntu setting you cited is used for general settings and does not affect the Audacity screen.