Nobody really knows because the virus itself carries so much uncertainty. That's why market volatility is so high- 2 weeks of lockdown? Two months? A year? Oh it's ending next week? Nobody knows

Worst case you can just imagine up some great depression 2.0 where all confidence in the economy is gone and nobody has jobs , or maybe a government so intent on preventing this that it causes hyperinflation. I don't think either of these are particularly likely