Does UK has five hundred pounds in legal tender in note?

No. The Bank of England first issued a Five Hundred Pound note somewhere between 1725 and 1745. The Five Hundred Pound note was last issued in 1943 and ceased to legal tender in 1945.

The current highest denomination banknote issued by the Bank of England is the Fifty Pound note. They have no current plans to produce any higher denomination notes in the foreseeable future.