Unityのタイピングでスコア表示ができない

Unityのタイピングゲームでスコア表示させたい

Unityでタイピングゲームを作っているのですがスコア表示のコードを打って表示させるobjectにスクリプトを入れようとしたところ以下のメッセージが出ました

ソース

タイピング判定
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
//using System.Collections.Generic;
public class Type : MonoBehaviour
{

public TextMesh ScoreTextMesh;
public TextMesh stringTextMesh;
public TextMesh alphabetTextMesh;
public Dictionary dictionary;
public static int score = 0;

//public Score score;

TypingSystem ts;

// Use this for initialization
void Start()
{
    ts = new TypingSystem();
    ts.SetInputString(dictionary.GetRandomWord());
    //point = point + 100;
    UpdateText();
}

// Update is called once per frame
void Update()
{
    string[] keys = {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j",

"k", "l", "m", "n", "o", "p", "q", "r", "s", "t",
"u", "v", "w", "x", "y", "z", "-",};
foreach (string key in keys)
{
if (Input.GetKeyDown(key))
{
if (ts.InputKey(key) == 1)
{
UpdateText();
//point = point + 100;
}
break;
}
}
if (ts.isEnded())
{
ScoreScript.hantei = 1;
ts.SetInputString(dictionary.GetRandomWord());
UpdateText();
//scoreGUI.SendMessage ("AddPoint",point * 1);
//point = point + 100;
}
//point = point + 100;
}

void UpdateText()
{
    stringTextMesh.text = "<color=red>" + ts.GetInputedString() + "</color>" + ts.GetRestString();
    alphabetTextMesh.text = "<color=red>" + ts.GetInputedKey() + "</color>" + ts.GetRestKey();

}

}
スコア表示
using UnityEngine;
using UnityEngine.UI;
using System.Collections;
public class ScoreScript : MonoBehaviour
{
public Text scoreText;
public static int score = 0;
public static int hantei;
void OnGUI()
{
GUI.Label(new Rect(100, 15, 500, 300), "SCORE:" + score);
}
void Start()
{

    //GetComponent<Text>().text = "Score: " + score.ToString(); 
}
void Update()
{
    if (hantei == 1)
    {
        score = score + 10;
        hantei = 0;
    }
    //GetComponent<Text>().text = "Score: " + score.ToString(); 
}

}