How to make a highscore list?

How do I make a highscore list for the players (offline) I know how to handle with highscores, but how do I axxally save the highscores on a unity3d scene, so that the players always can see his/her score from the score scene. And how do I make a box where players can fill his/her name in it and that must save also ofcourse.

PS: Sorry for my bad English.

Thanks in advance.