I dragged the footage (sound file and video) onto the menu and chose create button and would like to make the text bigger but I couldn't figure out how to.
How do you change the size of text connected to a button?
Highlight/select the text you want to alter. Either hit Command-T or go up to Format>Font>Show Fonts. Both open the Fonts window/toolbox and you can change the font, make it bold, make it bigger, change the color, etc