George what do I need to do to be able to fight the boss

You'll need to have completed the Legendary Event Moves quest as a prerequisite. This quest requires you in turn to have caught one of the respective legendary beasts (Raikou, Entei or Suicune). From there, you'll need to have at least 200 hours of playtime to be able to start the Legendary Event Moves quest.

 

Here is a good forum guide if you need a walkthrough, additionally the wiki page for it can also provide you with a decent walkthrough of the quest if you meet the prerequisites for it.

 

Hope this answers your question and best of luck challenging George!

Edited March 16, 20224 yr by Electrocute4u

There is an explanation at the wiki page: https://wiki.pokemonrevolution.net/index.php?title=George_(boss)
Check that part "Challenging George".