1. "My family and me are **all** love western culture very much" (all) 2. It mean nothing and the sentense have the same meaning if you left it out.

sometimes it means "also or "both in the sentence. ex. Both you and me like that red car or We also love doing outdoor exercise~

“都” in this sentence equals to “也”, which means ‘also’, 'as well' in English. However, this usage is quite more common in Cantonese whilst Mandarin or Putonghua prefers “也” to express the same meaning.

this is a error sentence,"都" shouldn't used in this place;the true sentence is "我非常喜欢西方的一些文化". "都" like English "all". it's all right; (it's) 都(all) 还好(right); [The subject of the sentence is omitted in Chinese]