resetting count variable on scene change?

I am making a game that has 1 room and that room is duplicated across 10 scenes. There are two players that must choose the same door. Once chosen it adds 1 to that doors count and loads the next scene. The problem is that when it loads the next scene it also returns that doors count value back to 0. I need a final total of each doors count at the end of the 10 scenes. So my question is how do I change the code to make it keep count and not reset back to 0 after each scene?

I have tried creating a static variable to hold the count and that did not work unfortunately.

Thanks for the help in advance. :) Here is the code:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.SceneManagement;
 
 public class door_trigger_count : MonoBehaviour
 {
 
     public string nextLevel;
 
     private int count;
     private int count2;
 
     private int totalRed;
     private int totalBlue;
 
     public bool redDoor;
     public bool blueDoor;
 
     // Use this for initialization
     void Start()
     {
 
     }
 
     // Update is called once per frame
     void Update()
     {
         if (count == 1 && count2 == 2)
         {
             if (redDoor == true)
             {
                 totalRed++;
             }
             if (blueDoor == true)
             {
                 totalBlue++;
             }
 
             Debug.Log("red " + totalRed);
             Debug.Log("blue " + totalBlue);
 
             SceneManager.LoadScene(nextLevel);
 
         }
     }
 
     void OnTriggerEnter(Collider other)
     {
         if (other.gameObject.name == "player1")
         {
             count = 1;
         }
 
         if (other.gameObject.name == "player2")
         {
             count2 = 2;
         }
     }
 
 
 }