A weaker Goku and Beerus creating and containing the Dense Energy could destroy the Universe (which is made up of different infinite sized realms/universes with their own space time continuum) meaning its Multi-Universal.
Also, a stronger Goku and Beerus
clashing and creating the Sphere of Destruction, which is Multi-Universal since its stronger than the Dense Energy. A fatigued Base Goku post SSG Absorption punching it away. This proves SSG Goku before absorption was Multi-Universal, and that when he shook the macroverse he raised his power over and over again meaning it wasnt even his FP.
Imagine current Goku, trained with Whis for 4 months, HTC for 3 years, got atleast 10x stronger from there to the start of the ToP plus the insane boosts he got throughout that same ToP.
Goku is Multiversal in his base form.