They are super busy these days. It has been taking an average of around 3-5 days to get a response to my tickets. Just make sure you don't duplicate tickets for the same issue. That will really slow it down.
Hello, @yalp7thb14_ESO! After looking at your account, you have sent in one customer support request this afternoon, which already has received a response from our team. Please let us know if you have any other concerns/questions!
It also depends on the type of request. If you send in a bug report in-game, it says on the confirmation that you may not get a reply unless they need more information from you.