What can I do, my father passed away two months ago I don't know if there is a will my step mom isn't say anything don't know my rights

Do you have any idea whether there is a will or not? Do you know who your father's attorney was? If so, call that person. Alternatively, you should tell your step mother that, unless she produces a will, you will assume there is none, and, unless she files a probate proceeding, you will do so. Go to a good local lawyer. Good Luck.