You need to put the scripts in your /users/kayla/Library/Preferences/Autodesk/maya/scripts folder. (use your Mac user name instead of kayla if it differs.)
Then enter this into the Python script editor and run it:
import rr_main_curves
rr_main_curves.window_creation()
If you want a toolbar shelf item for the plugin, highlight those two commands in the script editor and hold down the middle mouse button while you drag and drop them on the shelf of your choice.
