Save the world emote key assignment?

I have removed the button assignments for dancing in rdw fortnite and can't take them off course in the settings

Can someone help change?

In the settings you should be able to assign Emote with a key.

For that you have to go into Battle Royale for a short time and there you will find the key assignment for "Emote" under the category "Emote" (default to B).

If that does not help, then go back to the world to the key bindings and then go to the bottom right on "presetting select", there select "Old School", and it should go again.