What Different Patterns Are There To Make 不如 Sentences？ A 不如 B+object+verb+得+adjective
example:


  玛丽不如保罗法语说得流利


A 不如 B+Verb-object+verb+得+adjective
example:


  玛丽不如保罗说法语说得流利


Are these two patterns correct?

Some say it's correct, some says it's wrong, I'm so confused.

Can you please tell me the different patterns of using 不如 to make comparisons?
Both are correct.
Your question has nothing to do with 不如. The point is 法语说得流利 vs 说法语说得流利. The former's emphasis is 法语, while the latter's one is 说法语. Here's a nuance of the sentence's sense.