If an atom has the electron conifig.1s^2 2s^2 2p^3, is the p orbital the valence shell or is it the 2p and 2s?

Because the 2p orbital has slightly more energy than the 2s orbital, I was wondering which one is considered the valence shell? Is it the 2p orbital because it is the highest on the energy spectrum, or is it both the 2p and the 2s orbitals because they both have the same principle quantum number?