How many Mjolnir wielding MCU Caps can Endgame THANOS kill before tiring or being killed himself?

3 would get the job done.

One on one? Depends on Thanos's physiology. At once? Probably 5

Are they coming at him all at once or does he fight one, get a break, then next comes?

@mm7910: All at once, like Cap & Bucky against Tony.

@usha: then probably 5-10.

Chip damage will never kill or knockout Thanos. A mob of hammer strikes that can only bruise maybe or slightly cut on the cheek if we scale to Iron Man isn't enough to actually end a fight.

I mean how many cuts on the cheek until Thanos is dead? Hundreds.

Thanos is gonna kiss America’s ass

All of them