From the CDC (figures as of Sept. 10. 2020):
|Age||Infection Fatality Ratio (Current Best Estimate)|
You read that correctly. People under the age of 50 have a 0.02% (zero point zero two percent, or two hundredths of one percent) or less chance of dying from a SARS-CoV-2 infection.
Remember, this is why we shut down the world, rather than, say, allowing old people to self-isolate for a bit.