Error CS0131

Hey, im new to Unity and im trying to make a platformer, right now i am working on a “Unlock-System” and i had a good idea how to do that, but now i get an error : Assets/Scripts/Lock.cs(13,19): error CS0131: The left-hand side of an assignment must be a variable, a property or an indexer

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class WinGame : MonoBehaviour {
	
	//the "Back Button
	public void gback()
		{
			//if you win you go back to the Level Selector
			SceneManager.LoadScene ("LevelSelect");
		}
		
	//if you step into a Door you win
	void OnTriggerEnter2D (Collider2D other) {
		if (other.tag == "Player") {
			SceneManager.LoadScene ("LevelSelect");
			//i want that if you step into the door you will get to the Level Selector and then the next level is unlocked,
			//"enable" is just a name for me to remember
			PlayerPrefs.SetString("Level02Lock", "enable");
			
		}
	}
	
	void awake(){
         DontDestroyOnLoad (transform.gameObject);
     }
	
}

And the other Script which is in another Scene

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

public class Lock : MonoBehaviour {

	public Button levelButton02Locked;
	public Button levelButton02Unlocked;

	 void Start() {
		if (PlayerPrefs.GetString("WinGame", "Level02Lock") = "enable"){
			levelButton02Locked.gameObject.SetActive (false);
			levelButton02Unlocked.gameObject.SetActive (true);
		}
	}
}

if (PlayerPrefs.GetString(“WinGame”, “Level02Lock”) = “enable”)
should be:

if (PlayerPrefs.GetString("Level02Lock") == "enable")