Can't seem to get Mono behavior to work

Hello! First time posting on Unity forums! I can't seem to get monobehavior or intelligent to work in visual studio. Here is my code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerMovement : MonoBehaviour {
 
     public Rigidbody2D actingCharacterRigidbody;
 
     private float playerSpeed = 3f; // Float variable that holds the player's speed.
 
     private bool movementLocked; // Boolean variable that represents whether the player's WASD movement is locked or not.
 
     // Use this for initialization
     private void Start ()
     {
         movementLocked = false;
     }
     
     // Update is called once per frame
     private void Update ()
     {
         if (movementLocked) // If movementLocked equals true, lock the movement.
         {
             Debug.Log("Movement is locked.");
         }
         else
         {
             Movement();
         }
     }
 
     private void Movement() // Houses the code for the player's movement.
     {
         if(Input.GetKey("w")) // If w is pressed the player moves forward.
         {
             actingCharacterRigidbody.transform.Translate(transform.up * (playerSpeed * Time.deltaTime), Space.World); // Moves the player forwards relative to the direction he / she is facing.
         }
         if(Input.GetKey("s"))
         {
             actingCharacterRigidbody.transform.Translate(-transform.up * (playerSpeed * Time.deltaTime), Space.World); // Moves the player backwards relative to the direction he / she is facing.
         }
         if(Input.GetKey("a"))
         {
             actingCharacterRigidbody.transform.Translate(-transform.right * (playerSpeed * Time.deltaTime, Space.World)); // Moves the player to the left relative to the direction he / she is facing.
         }
         if(Input.GetKey("d"))
         {
             actingCharacterRigidbody.transform.Translate(transform.right * (playerSpeed * Time.deltaTime, Space.World)); // Moves the player to the right relative to the direction he / she is facing.
         }
     }
 
     private bool Sprint()
     {
         
     }
 
     public void MovementKeyhole(bool val) // Keyhole function that takes a boolean variable that locks or unlocks the player's WASD movement.
     {
         movementLocked;
     }
 }

Here is a picture to go along with it.

I'm using VS 2017 Community and Unity 2018.1.1f1.

Thank you!