How do you get a goose egg?

Excuse me, could you please clarify what you mean by "getting a goose egg"? If you're referring to the colloquial term for a score of zero, such as in a game or competition, then typically you don't "get" a goose egg, it's a result of your performance. However, if you're asking about obtaining a literal goose egg, as in an egg laid by a goose, that would typically involve having access to a goose that is laying eggs, and then collecting the egg once it's laid. Could you please provide more context for your question so I can give a more accurate answer?