How do I implement a timer into this script that will record the total time the player has played.

Where would I put this in the code? Sorry I'm really new to this stuff.

The float gameTime = 0 declaration would go right after your class declaration, where all the class variables are.

the void update() function and everything inside it can go anywhere, as long as its inside the class and not inside any other function.

And then, ins$$anonymous$$d of my Debug.Log, you use the gameTime variable where you need it to be shown. Like if you want to make a window with a clock, you use it inside the onGUI function.

I'm getting an error on "float gameTime = 0;" saying "";" expected. Insert a semicolon at the end." and also at "gameTime += Time.deltaTime;" is getting an error saying "Expecting :, found +=". Am I doing something wrong?

Yes, it seems you're missing the semicolon at declaration. Better yet, just post your whole code. Inside a code sample, of course.

 var vSbarValue : float;
 function OnGUI (){
     vSbarValue = GUI.VerticalScrollbar(Rect (887.5, 150, 100, 300), vSbarValue, 1.0, 10.0, 0.0);
     
 //Font Size and Color Change
     var statsStyle = new GUIStyle("label");
         statsStyle.fontSize = 30;
     var buttonStyle = new GUIStyle("Button");
         buttonStyle.fontSize = 17.5;
     var statStyle = new GUIStyle("Label");
         statStyle.fontSize = 17.5;
     var twoStyle = new GUIStyle("Label");
         twoStyle.fontSize = 25;
     var fourStyle = new GUIStyle("Label");
         fourStyle.fontSize = 25;
     var pictureStyle = new GUIStyle("Label");
         pictureStyle.fontSize = 20;
 
     float gameTime = 0;
 
     //Statistics Title GUI Design
         GUI.contentColor = Color.black;
         GUI.backgroundColor = Color.white;
         GUI.Label(Rect(450,100,250,100), "Statistics",statsStyle);
         GUI.Label(Rect(470,135,250,100), "Pictures",pictureStyle);
 
     //Statistics Sub-Title GUI Design
         GUI.Label(Rect(200,175,250,100), "High Scores for Two Choices:",statStyle);
         GUI.Label(Rect(600,175,250,100), "High Scores for Four Choices:",statStyle);
 
     //Two Choices GUI Design
         GUI.Label(Rect(175,200,250,100), "A - Z = ",twoStyle);
         GUI.Label(Rect(175,275,250,100), "Z - A = ",twoStyle);
         GUI.Label(Rect(175,350,250,100), "Random = ",twoStyle);
 
     //Four Choices GUI Design
         GUI.Label(Rect(575,200,250,100), "A - Z = ",fourStyle);
         GUI.Label(Rect(575,275,250,100), "Z - A = ",fourStyle);
         GUI.Label(Rect(575,350,250,100), "Random = ",fourStyle);
 
 if(GUI.Button(Rect(150,100,150,30), "Back to $$anonymous$$enu",buttonStyle)){
     Application.LoadLevel("$$anonymous$$enu");
 }
 if(GUI.Button(Rect(750,100,150,30), "Next Page",buttonStyle)) {
     Application.LoadLevel("Statistics2");
 }
     }
 {
     gameTime += Time.deltaTime;
 }