In a never ending loop of errors What am i doing wrong any help greatly appreciated

Questions & Answers
1

var open : boolean = false;

var openAnimationString : String;
var closeAnimationString : String;
 
var buttonTransform : Transform;
var distToOpen : float = 4;
 
@HideInInspector
var playerTransform : Transform;
@HideInInspector
var cameraTransform : Transform;
 
var openSound : AudioClip;
var closeSound : AudioClip;
 
function Awake ()
{
    playerTransform = GameObject.FindWithTag("Player").transform;
    cameraTransform = GameObject.FindWithTag("MainCamera").transform;
    if (open)
        animation.Play(openAnimationString);
}
 
function Update ()
{
    var alreadyChecked : boolean = false;
    var angle : float = Vector3.Angle(buttonTransform.position - cameraTransform.position, buttonTransform.position + (cameraTransform.right * buttonTransform.localScale.magnitude) - cameraTransform.position);
    if (Vector3.Distance(playerTransform.position,buttonTransform.position) <= distToOpen)
    if (Vector3.Angle(buttonTransform.position - cameraTransform.position, cameraTransform.forward) <= angle)
    if (Input.GetButtonDown("Use Key")  !animation.isPlaying)
    {
        if (open)
        {
            animation.Play(closeAnimationString);
            open = false;
            alreadyChecked = true;
            if (closeSound)
                audio.PlayOneShot(closeSound);
        }
        if (!open  !alreadyChecked)
        {
            animation.Play(openAnimationString);
            open = true;
            if (openSound)
                audio.PlayOneShot(openSound);
        }
    }
2

if (Input.GetButtonDown(“Use Key”) !animation.isPlaying)

and

if (!open  !alreadyChecked)

are wrong. Looks like you’re missing some =.

And openSound is an AudioClip, so

if (openSound)

Is wrong too. But if you read the error message it’ll probably tell you that.
And please put some curly brackets to enclose your if blocks.