i just need to know if a a apartment get your 401k statement for any reason
Can they ask you for it? Sure. Are you required to give it to them? No. They certainly can decide not to rent to you or otherwise not renew your lease if you don't provide them information that they can legally request. There is no law that says 401K statements are protected by privacy rules.
This answer is for informational purposes only and is not legal advice regarding your question and does not establish an attorney-client relationship.