how to Display time after game complete

currently i have this,

function winGame () { if (winPoint >= 10) { Debug.Log ("You win"); guiText.text = Time.timeSinceLevelLoad.ToString(); } }

but i get this error

MissingComponentException: There is no 'GUIText' attached to the "playerEgg" game object, but a script is trying to access it. You probably need to add a GUIText to the game object "playerEgg". Or your script needs to check if the component is attached before using it. eggStatus.winGame () (at Assets/Scripts/eggStatus.js:66) eggStatus.winGame (Int32 pointsToApply) (at Assets/Scripts/eggStatus.js:30) winScript.OnTriggerEnter (UnityEngine.Collider objectCollided) (at Assets/Scripts/winScript.js:9)

i dont have any idea on how to use the gui.text so...