It's complicated. We can calculate the dissonance (e.g., harmonic entropy) for specific note combinations, but even the best models of consonance and dissonance

It's complicated. We can calculate the dissonance (e.g., harmonic entropy) for specific note combinations, but even the best models of consonance and dissonance don't correspond perfectly with human ratings -- nor can be applied to complex sounds. There isn't a meter capable of showing how consonant or dissonant a song is, at any point in time -- or for the song as a whole.