How long do /petitons take for answers?

[Videri]

According to the sticky at the top of the Petition/Exploit forum, PETITION/EXPLOIT FORUM: Read before posting, guild creation is one of the things you're supposed to petition for in-game.

Guild Creation: In your petition include your desired guild name along with an alternative in case that name is taken. If the name is approved we will create it exactly as you write it as long as it falls within our guidelines. If you'd like multiple leader roles, list the toon names and double check spelling. Please have the required 6 players before petitioning for a guild creation.