None of the laws and equations hold quantitatively, also the basic objects do not exist, and the basic axioms don't hold either. All of the qualitative results, conservation laws, negative laws that forbid things are total useless.
There is a chance that relativity is wrong, there is no spacetime, there are no frames, E, m and c are useless numbers, and albeit they are definable and measurable, E=mc^2 never ever holds. (< or > holds instead)
Or the same can happen with quantum, there are no states, you can't add states together, Dirac equation never ever holds quantitatively, etc etc.