Access Variables From 1st Script to 2nd Script? (C#)

Hi, I am making a 2D game, and I need some help on how to access variables. I am trying to have the camera stop moving when a player collides with an enemy from a separate script, and the problem isn’t the collision, it’s the ability to access a variable from another script that I am having a problem with. I tried searching how but nothing really worked. Here is my script:

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

public class TheRestarter : MonoBehaviour {
	public MoveCamera moveCamera;
	private Animator anim;
	public string GameOverScene;


	void Awake () {
		anim = GetComponent<Animator> ();
		MoveCamera moveCamera = MainCamera.GetComponent<MoveCamera>(); Error ---> "The name 'MainCamera' does not exist in the current context"
		moveCamera.speed = 0;
	}

	 

	void OnCollisionEnter2D(Collision2D target)
	{
		if(target.gameObject.tag == "Enemy")
		{
			anim.Play ("RedGiantDeath");

			StartCoroutine(DelayedSceneLoad());
		}
	}


	IEnumerator DelayedSceneLoad()
	{
		yield return new WaitForSeconds(1.5f);
		SceneManager.LoadScene(GameOverScene);

	}
}

On that script I try to access the “speed” variable from this script:

using UnityEngine;
using System.Collections;

public class MoveCamera : MonoBehaviour {

	public float speed = 0.5f;
	public float maxSpeed = 0.5f;
	void Start () {
	
	}
	
	// Update is called once per frame
	void Update () {
		Vector3 temp = transform.position;

		temp.x += speed * Time.deltaTime;

		transform.position = temp;

		speed += 0.5f * Time.deltaTime;

		if (speed < maxSpeed)
			speed = maxSpeed;
	}
}

As you can see I have an error saying “The name ‘MainCamera’ does not exist in the current context.”
Could someone please help me?

MoveCamera moveCamera = Camera.main.GetComponent();

Script Reference - Camera.main