Hailey, The Gold Bars will be distributed only after the event is over. Because, I am sure King has to make sure how many players have completed the event --> and then calculate the head count of the players with the gold bars!! And this will not be possible if the players are still playing the event, and it would be confusing! Isn't it?
If you have received the Golden Key and have finished the event, then you are one of the players to receive the share in the Golden Bars
Hope this made sense! Have a great rest of the day/evening!