I think this actually highlights a lot of the problems that people have with duolingo. You aren't terrible at French, but you are missing exactly the skills people malign Duolingo for not teaching. There are problems with word order, which looks like a lot of word to word translation or bad Google Translate (e.g., "Est-ce que mon francais bon?" is odd and unnatural). Your present-tense is spotty (e.g., it should be "j'apprends" not "je apprendre"), and your ability to use other tenses correctly appears non-existent (e.g., it should be "j'ai changé" not "j'ai changement" which translates as "I have change").
I don't think you'd pass a B1 exam (lower intermediate) given the above. Maaaybe A2 (upper elementary) for comprehension if your comprehension is better than your production. I suspect you'd have a great deal of difficulty communicating with a native speaker without the help of translation software as well.