What is 'good luck' in German?

"Viel Glück" is a German equivalent of "good luck."

The adjective "viel" means "a lot of, a great deal of, the best of." The noun "Glück" means "luck." Its singular definite article is "das" ("the").

Also if you want to say someone is lucky, you can say they are "glucklich" with an umlaut over the "u"
"Good luck" in German is "Viel Glück!"