The phrase "good s" is an abbreviated way of saying "good stuff" or "good things." It is expressing appreciation or approval of something. Full definition
He did a lot of good work for the world. (fortune.com)
Because these sugars are processed and not natural, they're not as good for your body. (businessinsider.com)
When people in one nation are given knowledge of better ways of life in other nations, they have a basis for aspiring toward equal benefits and opportunities for themselves. (religion-online.org)