Fixing a beef broth with too much celery seed I cooked a large crock pot of beef bone broth. I didn't have any veggies so I used garlic salt, onion powder, celery seed and bay leaves with my beef bones and about 4 quarts of water.  I didn't measure anything, just poured spices in. 

It has been simmering now for 18+ hours. I decided to taste and it is very bitter from all the celery seed. Now what can I do to try and fix the taste from all,the celery seed? I really hate for the broth to go to waste.
Bitterness is generally corrected with a combination of salt, sweetness and/or fats. 

You mention that don't have any veg at the moment -- perhaps put the stock aside or freeze until you can pick some up. Some sweet veg like parsnip and carrots could probably rescue this stock for you. Sweet herbs like basil or spices like cloves might also work, depending on what you like. 

References for flavor balancing:
 - http://www.theguardian.com/lifeandstyle/wordofmouth/2013/nov/19/balance-flavours-salt-sweet-bitter-sour-umami
 - http://lifehacker.com/learn-to-make-any-dish-you-cook-better-with-the-science-1477864259
 - http://academiewines.com/blog/2010/05/14/strategies-for-fixing-your-dish/

A herb and spice reference that might give you some ideas:
 - http://www.thekitchn.com/quick-guide-to-every-herb-and-spice-in-the-cupboard-108770