Can my husband file for a divorce and lie and tell them he does not know where I am and file for a divorce?

If the law is like pa, he could say your whereabouts are unknown and ask court permission to serve you by publication. Find out where he filed and see if you can file a notice of residence by mail at the same docket number. It can be a simple one page document with your current name and address on it. this way, he can't argue not knowing where you live.