Similar to Actual mass of Hayabusa samples in 2010?, but about the recent mission.
What is the actual mass of the samples retrieved by Hayabusa 2?
The most detailed information I was able to find is:
A five-gram tantalum projectile was fired down the horn with a sample of material being delivered up the instrument, collecting a planned total sample mass of over 100 milligrams. The second sampling excavated pristine material from beneath the surface, where it would have been shielded from space weathering. The spacecraft departed for Earth in November 2019
Is seems there actually two samples, the first one over 100 mg, the mass of the second one is not speficied.