[2020] Can’t update fortnite???

So, I went to play fortnite today, and it said “update the app” , so of course I did. As you guys know, after updating it on the App Store, you then have to update in - game. So it was going normally, was about 80% done, then it got stuck. It wouldn’t move. So I restarted fortnite, and now it says “Updating” and shows that it’s at 0.9% and won’t change no matter how long I wait, or if I restart. I don’t know what to do at this point.