There are lots of ways to get credits!

-Do not ask for them because it doesn't give you any.

-Work at a job which you can apply for to Mateo or Damen, including the coffee shop, pizza parlor, or being a News Reporter on the forum.

-Win them in contests or games that may be hosted by a Mod.

-Be an assistant for a Moderator which you have to either ask them for or prove you are worthy for it.

-Help out and be kind, caring, and considerate to other penguins.

Those are some ways to get credits. Hope this helped!!