error CS0120: An object reference is required to access non-static member `UnityEngine.UI.Toggle.isOn'

Hi, I’m having this error: error CS0120: An object reference is required to access non-static member `UnityEngine.UI.Toggle.isOn’
And here’s the code.

using UnityEngine;
using UnityEngine.UI;
using MaterialUI;
using System.Collections;
using System.Collections.Generic;


public class Manager : MonoBehaviour {

	[SerializeField]
	private Image m_ColorImage1;
	[SerializeField]
	private AnimationCurve m_AnimCurve;
	private string currentLevel = "";

	public Text scoreText;
	public bool isOn; 
	public float score;
    public void Link(string url) { Application.OpenURL(url); }

	void Start(){
		score = 0;
		SetScoreText ();
		scoreText.text = "0";
	}
	public void LoadScene(string scene)
	{
		Application.LoadLevel(scene);
	}

	void SetScoreText(){

		scoreText.text = score.ToString();
	}
	public void ToggleAddScore(string num){
		if (Toggle.isOn = true){
			score += 1;
			SetScoreText();
		}
		Toggle.isOn = false;
	}

    public void QuitApp()
    {
#if UNITY_EDITOR
        UnityEditor.EditorApplication.isPlaying = false;
#else
		Application.Quit();
#endif
    }
}

I searched alot, but not worked…

If this script is on a toggle button: replace Toggle.isOn with GetComponent<Toggle>().isOn

Or:

// Assign in the inspector
public Toggle m_toggle; 

and use

m_toggle.iOn

or:

// Assign in the inspector
public GameObject m_toggle;

and use

m_toggle.GetComponent<Toggle>().isOn