Humans can already withstand 100 atm so 0.6560691418 tons or Building level
So humanity is already at baseline Building level, which is further proven by the fact that the human skull can survive 500 pounds of force or 0.226796 tons (Small Building level+).
Roy Sullivan survived lightning which further more proves Building level scaling since lightning is 1.6 billion joules, but given he was struck 7 to 8 times repeatedly, he more than likely should upscale to Large Building level
So humans are already Large Building level but I can get them higher
They tank Earth's friction and Earth is 5.972e+24 kg with 29,784.8 m/s
Putting that in a KE calculator gets us 2.64898305276544e+33 joules or Planet level
Humans are around 70 kg so 2.64898305276544e+33 / 70 = 3.7842615e+31 joules or Small Planet level
Edit: I forgot to add rotational KE (465 m/s) which gets us 6.4564785e+29 joules
6.4564785e+29+2.64898305276544e+33 joules=2.6496287e+33 joules
splendid
2.6496287e+33 / 70 = 3.7851839e+31 joules
Small Planet level still