These should be a option on the "Applications" page where you can see the list of your Helper & Builder applications. It should appear "Helper Applications" and "Builder Applications".
I don't know if you have the same problem, but I can only see my builder applications(I've not done any, so my list is empty), I can't see my Helper Applications. It's a bug, but admins are going to fix it on the next applications "update".
I can't see my application though. And with the builder one, it still says its pending even though after I asked very recently, I was told it was declined