CameraMovement.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraMovement : MonoBehaviour
{
    public Transform target; // Edited: Fixed transform - It had a misstype error.
    public float smoothing;
    public Vector2 maxPosition; // Edited: Fix vector2 - It had a misstype error.
    public Vector2 minPosition;

    void LateUpdate() {
        if (transform.position != target.position) {
            Vector3 targetPosition = new Vector3(target.position.x, target.position.y, transform.position.z);
            targetPosition.x = Mathf.Clamp(targetPosition.x, minPosition.x, maxPosition.x);
            targetPosition.y = Mathf.Clamp(targetPosition.y, minPosition.y, maxPosition.y);
            transform.position = Vector3.Lerp(transform.position, targetPosition, smoothing);
        }
    }
}