Speed pad/booster 3D

Seeing as I'm almost USELESS at coding, AND using C# cause I learned about it first, I'm having a hard time making a speedpad. So, basically I want a script (preferably attached to the gameobject) to test if the player is colliding with an object called "booster" (no caps). Heres what I have right now.

 using UnityEngine;
 using System.Collections;
 
 public class Speedbooster : MonoBehaviour {
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void OnCollisionEnter(Collision collision)
     {
         if (collision.gameObject.name == "player")
         {
             GetComponent<Rigidbody>().AddForce(transform.forward * 500);
         }
     }
 }
 

So, once again, if possible I want a thingy (forgot what its called ;-;) in the inspector that I can change to change the amount of speed the player gains.