Get score in areas

Okay I've got a script that puts a timer on the upper left side of the screen, The problem is that i want this timer to be shown as either a) The time they got by the time they get to one of two areas/objects(preferably an area but an object will work too) and to just put that on the upper right of the screen. Or b) I would like some kind of score to be shown based on the timer shown in the upper right corner. Reason I'm having problems doing this myself is that i have no experience in programming area affecting or collision based functions. Help would be appreciated.

Here's what I've got so far

 private var startTime;
 private var restSeconds : int;
 private var roundedRestSeconds : int;
 private var displaySeconds : int;
 private var displayMinutes : int;
 
 var countDownSeconds : int;
 
 private var guiTextComponent;
 
 function Start() 
 {
     guiTextComponent = GetComponent("GUIText");
     startTime = Time.time;
 }
 
 function OnGUI () {
     //make sure that your time is based on when this script was first called
     //instead of when your game started
     var guiTime = Time.time - startTime;
 
     restSeconds = countDownSeconds - (guiTime);
 
 
     
     //display the timer
     roundedRestSeconds = Mathf.CeilToInt(restSeconds);
     displaySeconds = roundedRestSeconds % 60;
     displayMinutes = roundedRestSeconds / 60; 
     guiTextComponent.material.color = Color.red;
     guiTextComponent.text = String.Format ("{0:0}:{1:00}", displayMinutes, displaySeconds);
     
     if(restSeconds <= 0){
     guiTextComponent.text = "YOU LOSE!!!";
     return 0;
     }
 }