Access gameobject from a different scene...

Hey, Im a beginner at unity, so sorry if there is a very simple answer to this XD I have two scenes so far in my game, my main scene and main menu scene, In my main menu scene I have created a InputField and added a script I made, which is:

 var username : String;
 var inputField : UnityEngine.UI.InputField;
 var nameDisplay : UnityEngine.GUIText;
 
 function NameInput () {
      username = inputField.text;
      nameDisplay.text = username;
      inputField.enabled = false;
 }

The 'Username' gameobject is in the main game scene, however the script is assigned to a InputField in my main menu... So is there any way to reference my 'Username' gameobject (in my main scene) to my InputField (In my main menu)? Thanks! ;)