I uploaded a font to Dafont earlier today, it said that if it was approved i would receive an email, if it was not approved i would not receive it. Does it take more than 1 day or a week for it to be approved?

It depends on a lot of things. You can check when the last update was made right here: http://www.dafont.com/new.php

And you can check your approved fonts here : http://www.dafont.com/andre-felipe.d6692

Can we send a email to moderator to ask if our fonts haven't been published if they are uploaded more than 1 month?

At the moment, if your font has been submitted less than two months ago, it hasn't been checked yet.