Help with the Ego scoring module!

It would be very beneficial if someone who is experienced with the Ego scoring module could share their methods on saving and displaying the highscore. I have looked at the example project but it is just one page, on the main.lua file, it seems more difficult when there are multiple scenes such as a game scene and a gameOver scene.

I want to display the highscore on the gameOver scene 

It would also be helpful if anyone had a more complex example project for the Ego scoring module.

Thankyou for any replies.

Farid