It looks like pine, which is not particularly valuable. A 1x4 x 8ft. board is worth around $8. Because yours is cut into various lengths and already finished, it is more difficult to use and probably not worth as much. If you want to sell it, your best bet is to sell it as a bed frame rather than lumber. I would try to sell it on CL or Offerup. If it does not sell, then list if for free.