for what it's worth idiom  informal      
 不管有用与否;无论价值如何
said when you are giving someone a piece of information and you are not certain if that information is useful or important
  For what it's worth, I think he may be right. 不论是否有价值,我认为他可能是正确的。 
 They are, for what it's worth, the single most successful playhouse in the West. 无论是否重要,他们是西方唯一一个最为成功的剧院。