Good, it isn't well.
Ce n'est pas bon means 'this isn't good'.
" n'est-ce pas ? " means " isn't it ?" It can also mean "right?" or "aren't you?" when used at the end of a sentence. Examples of this are: Tu es américain, n'est-ce pas? -- You're American, right?...
N'est-ce pas ? means "isn't it?" or "isn't that so?" in English. With "N'est-ce-pas ?" You can translate all the tags in English (isn't it? , don't you?, haven't we?... ) For example, Tu es libre ce...
N'est-ce pas means "isn't it" in English.
It's not really French. Literally: "c'est un pas bon" = "he is a no good"More context would help.