UI text script error

I am getting the following errors and i don't know why. error CS0131: The left-hand side of an assignment must be a variable, a property or an indexer

error CS1061: Type Text' does not contain a definition for text' and no extension method text' of type Text' could be found (are you missing a using directive or an assembly reference?) i get that one twice

Here is my code;

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 public class Generate : MonoBehaviour
 {
     public GameObject rings;
     int score = 0;
     int highscore;
     Text text;
     // Use this for initialization
     void Start()
     {
         Text = GetComponent <Text> ();
         Debug.Log ("Generate");
         highscore = PlayerPrefs.GetInt("highscore", 0);
         InvokeRepeating("CreateObstacle", 1f, 1.5f);
     }
     
 
     void CreateObstacle()
     {
         Instantiate(rings);
         
         if (++score > highscore)
             highscore = score;
     }
     
     void Update()
     {
         
         text.text = "Score: " + score.ToString();
         text.text = "Highscore: " + highscore;
         if (score >= highscore) 
         {
             PlayerPrefs.SetInt ("highscore", score);
             
         }
         
         
     }
 
 }