When stuying to become a layer, can your bachelor degree be on anything you want it to be?

I am currently taking the pre-requisites for an RN but I was thinking of changing my major to a lawyer how do i go about doing this??? i am about to start my 2nd year of college this fall on my RN pre requ.. could I possible graduate as an RN with a bachelor degree and then would that satisfy my bachelor degree for a layer..idk i honestly have no idea