Within DanceWizard the only place you can control the size of the font is in the dance selection window. But you can make a global change in the Windows settings to make text a larger size. This applies for all applications on the computer.
I just tried the Text Size settings (this is under Windows 11 - I'm not sure where this is located in other versions of Windows). I found this setting by opening the Windows settings and searching for "Text" - the top entry was the Text Size setting.
By changing this (I tried the 160% setting) the font in the playlist as well as the buttons was all larger. I did notice that changing this while the Play window was displaying a cue card caused the cue card to be displayed incorrectly. Closing and then reopening the Play window fixed that problem.
Thanks,
Bill