To do Alt + H F F on Mac in Excel, download and install Accelerator Keys, then press Option, followed by H, F, F.
Command: Font Selection
This is how to do Alt + H F F on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + H F F font Selection opens the font dropdown to change the typeface. You can scroll through available fonts or type a font name to search.