How can i get the following script back on track to being a single level high score saver

hello, I'm trying to save highscore for single level on guitext to be next to current score. Is my script headed in the right direction if im trying to put on a second guitext next to score on each individual level? Thanks in advance.

var levelscore: float;

var hiscore: int;

function Start()

{

PlayerPrefs.SetFloat("hiscore", levelscore);

print("saved");

}

function Update() {

if(PlayerPrefs.GetFloat("levelscore"))

{

guiText.text = "HighScore "+levelscore;

levelscore == gameObject.Find("Score",int);

print("got Hiscore");

}