Help with coin pick up script

Im new to unity and making scripts. Im trying to make a script to pick up my coins but I keep getting 3 errors that i cant seem to fix. here are the errors:

error CS0119: Expression denotes a type', where a variable', value' or method group' was expected

error CS1502: The best overloaded method match for UnityEngine.Object.Destroy(UnityEngine.Object)' has some invalid arguments error CS1503: Argument #1' cannot convert object' expression to type UnityEngine.Object'

and here is my code for the coins

 using UnityEngine;
 using System.Collections;
 
 public class CoinPickup : MonoBehaviour {
 
     public int pointsToAdd;
 
     void onTriggerEnter2D (Collider2D other)
     {
         if (other.name == "Character") {
             ScoreManager.AddPoints (pointsToAdd);
             Destroy (GameObject);
         }
     }
 }