Activate object with key

Check your brackets. Your missing open and closed brackets on line 28 and 35

Also I give you a link to format your C# code for better readability. http://www.manoli.net/csharpformat/

Here's your fixed and formated code

 public GameObject laser;       
     public bool requireKey;                  
     public AudioClip doorSwishClip;           
     public AudioClip accessDeniedClip;          
     private DoneHashIDs hash;                
     private GameObject player;
     private DonePlayerInventory playerInventory;    
     private int count;                    
     
     void Awake ()
     {
         
         hash = GameObject.FindGameObjectWithTag(DoneTags.gameController).GetComponent<DoneHashIDs>();
         
         player = GameObject.FindGameObjectWithTag(DoneTags.player);
         
         playerInventory = player.GetComponent<DonePlayerInventory>();
         
     }  
     void OnTriggerStay (Collider other)
     {   
         if(other.gameObject == player)
             
         {      
             if(requireKey)           
             {
                 
                 if(Input.GetButtonDown("Interact"))
                 {
                     if(playerInventory.hasKey)
                         LaserDeactivation();
                     count++;
                 }
                 else          
                 {          
                     audio.clip = accessDeniedClip;            
                     audio.Play();          
                 }
             }
             
             else       
                 count++;
         }   
         else if(other.gameObject.tag == DoneTags.enemy)     
         {     
             if(other is CapsuleCollider)                    
                 count++;
         } 
     }   
     void OnTriggerExit (Collider other) 
     {     
         
         if(other.gameObject == player || (other.gameObject.tag == DoneTags.enemy && other is CapsuleCollider))  
             count = Mathf.Max(0, count-1);
     }   
     
     void LaserDeactivation ()     
     {        
         laser.SetActive(true);   
         audio.Play();
     }
 }