[edit] - @Cableguy beat me to it
The fonts that are available are the only ones that come "with the OS" (or are supplied by B4A).
If you want a different font you will need to find a TTF or OTF version of the font and include it in your files folder. Once there, you may add it via the files tab on the designer and you will then see it in the designer font list. Note that Android can be kind of picky with its font files, I have had some TTF files that work fine on Windows machines yet fail to load properly on Android devices.
Or, you can create the typeface in your starter service and assign it manually:
Public TimesFont As TypeFace
Sub Service_Create
TimesFont = Typeface.LoadFromAssets("times.ttf")
End Sub
Then, in your code you can set it via
Label1.Typeface = Starter.TimesFont