How do I fix compiler errors that must be fixed before entering play mode?

How do I fix compiler errors that must be fixed before entering play mode?

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class PlayerController : MonoBehaviour
 {
     public float speed = 5.0f;
     public float turnSpeed;
     public float horizontalInput;
     public float forwardInput;
 
     // Start is called before the first frame update
     void Start()
     {
         
     }
 
     // Update is called once per frame
     void Update()
     {
         horizontalInput = Input.GetAxis("Horizontal");
         forwardInput = Input.GetAxis("Vertical");
         
         // Move the vehicle forward
         transform.Translate(Vector3.forward * Time.deltaTime * speed * forwardInput);
         transform.Rotate(Vector3.up, turnspeed * horizontalInput * Time.deltaTime);
     
     }
 }