I disagree with @mstorkson. I believe that many teachers (including mine) would mark it as misspelled word, but it's actually debatable to say it's entirely wrong. This is what I found in New Fowlers Modern English Usage
any ways, anyways. As an adverb = 'in any way, in any respect, at all', used <...> in many literary contexts during
the last four centuries. It seems to have
dropped out of standard UK use now, though it survives in regional use. It is
also encountered (always written as one word, anyways) in informal AmE.
So according to the book, I think it's acceptable in some dialects and informal contexts. But avoid using it in academic writing.