Hey everyone!

I searched how i can adding forum rules to the header but i can only find "Adding Rules to the Registration Process". I hope someone can help me. Thanks!

Hello

Admin panel..General..Forum...Categories and Forum....Select the forum you want the additional rules to appear.... (Modify) .....Scroll to Forum Rules.

If Topic Creation is checked, the rules will appear at the top every time a member post a new topic 
If Standard Replies is checked, the rules will appear at the top every time a member replies to a topic with post reply 
If Quick Reply is checked, the rules will appear at the top of the editor every time a member replies using the quick reply

But i want it in header like Profile or Members. It is possible?

You mean in the navigation bar?

Yes.

Ok so 
You will create a html page Admin panel...modules..html management ..Create new and write the rules you want ...save
Then go to admin panel..display...Headers and navigation ....nav links ....add a customize menu..create your new menu and add there the url of the html page you created

Thank you! Solved.