It's likely that the mortality rate is around 0.1-0.2% which is the same as seasonal influenza.
https://reason.com/2020/04/20/l-a-county-antibody-tests-sugg...
https://reason.com/2020/04/20/l-a-county-antibody-tests-sugg...
https://newsroom.uw.edu/news/early-study-covid-19-patients-s...
That's the study with the BEST outcomes. Every other study shows an even higher mortality rate among those ventilated.