Keyword 'void' cannot be used in this context

Seems like you've just copypasted it from somewhere, anyway there are plenty of misstyping and such, won't describe all of that, here is the corrected version (at least that won't give you misstyping errors):

 using UnityEngine;
 
 public class PlayerMovement : MonoBehaviour
 {
     public float speed = 6f;
     Vector3 movement;
     Animator anim;
     Rigidbody playerRigidbody;
     int floorMask;
     float camRayLength = 100f;
     void Awake()
     {
         floorMask = LayerMask.GetMask("Floor");
         anim = GetComponent<Animator>();
         playerRigidbody = GetComponent<Rigidbody>();
     }
     void FixedUpdate()
     {
         float h = Input.GetAxisRaw("Horizontal");
         float v = Input.GetAxisRaw("vertical");
         Move(h, v);
         Turning();
         Animating(h, v);
     }
     void Move(float h, float v)
     {
         movement.Set(h, 0f, v);
         movement = movement.normalized * speed * Time.deltaTime;
         playerRigidbody.MovePosition(transform.position + movement);
     }
     void Turning()
     {
         Ray camRay = Camera.main.ScreenPointToRay(Input.mousePosition);
         RaycastHit floorHit;
         if (Physics.Raycast(camRay, out  floorHit, camRayLength, floorMask))
         {
             Vector3 playerToMouse = floorHit.point - transform.position;
             playerToMouse.y = 0f;
             Quaternion newRotation = Quaternion.LookRotation(playerToMouse);
             playerRigidbody.MoveRotation(newRotation);
         }
     }
     void Animating(float h, float v)
     {
         bool walking = h != 0f || v != 0f;
         anim.SetBool("IsWalking", walking);
     }
 }