Is it lawful to take an old Quran from a mosque, because nobody recite it due to its bad condition? Second, if it is new one, what would be the verdict on that, can I take this?

All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.

If you are asking whether it is permissible to take a Mus-haf home from the mosque to own it, the answer is that it is not permissible for you to take any of the Mus-hafs which are devoted to the exclusive use of the mosque. However, if there is an old copy that people do not benefit from, you are allowed to take it and substitute it with another one that people can use.