Ce n'est pas bon means 'this isn't good'.
Good, it isn't well.
The cast of Ce bon docteur - 1909 includes: Mistinguett Albens Paul Landrin
what's good [for diner] tonight? is the translation of 'quoi de bon ce soir'.
The cast of Ce bon La Fontaine - 1918 includes: Georges Colin Mary Harald
basically, "how long have you studied French?"
I'm still a good little boy this day
so, what do I say?
Ces't Ce Bon Vie
Is this not good for your health?
Ce n'est pas très bon.
IS it good taste?