BonusPoints.cs

using UnityEngine;
using System.Collections;

public class BonusPoints : MonoBehaviour
{
    //make a container for the heads up display
    Pancam hud;
    public GameObject player;

    void OnTriggerEnter2D(Collider2D col)
    {
        if (col.tag == "Player1")
        {
            hud = GameObject.Find("Main Camera").GetComponent<Pancam>();
            hud.IncreaseScore(10);
            Destroy(this.gameObject);
        }

        else if (col.tag == "Player2")
        {
            hud = GameObject.Find("Main Camera").GetComponent<Pancam>();
            hud.IncreaseScore2(10);
            Destroy(this.gameObject);
        }

    }
}

This script creates a bonus-point pickup, and when a player collides with it and collects it, it will grant them 100 bonus points.