AI offers these hints...
"There is no documented way to make the Express Scribe “Scribe Mini” / mini toolbar itself larger; its size is fixed by the program.
A few partial workarounds you can try instead:
Use normal (full) Express Scribe and resize that window larger, rather than using Scribe Mini.
Turn on “Float Above Other Windows” so the main window stays on top while you type in Word or another editor.
Raise the display scaling in Windows (Settings → System → Display → Scale) to make all UI elements, including the mini controls, appear larger on screen.
Use system‑wide hotkeys or a foot pedal so you do not need to click the tiny mini toolbar buttons as often.
If you absolutely need a larger on‑screen control bar, the only true solution today is to avoid Scribe Mini and arrange the full Express Scribe window in a thin strip at the edge of your screen."