No projects compile since updating to latest version of Unity

Unity Engine
1 
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class Hexagon : MonoBehaviour
{
     public Rigidbody2D rb;

    public float shrinkSpeed = 3f;
    public GameObject MyTimer;

    // Start is called before the first frame update
    void Start() {
        rb.rotation = Random.Range(0f, 360f);
        transform.localScale = Vector3.one * 10f;
    }

    // Update is called once per frame
    void Update() {
        transform.localScale -= Vector3.one * shrinkSpeed * Time.deltaTime;

        if (transform.localScale.x <= .05f)
        {
          
            Destroy(gameObject);
        }
    }
}

The namespace UnityEngine isn’t being recognised for some reason :confused:

2

Facing same issue here too. Help is appreciated.

Thanks in advance.
Regards,
Shane