I don’t even know which denominations our cash uses now. For example is there a 100 bill or was it replaced with the 200? But as we see here it doesn’t matter

I don’t even know which denominations our cash uses now. For example is there a 100 bill or was it replaced with the 200? But as we see here it doesn’t matter whether I use cash since stores close when the systems go offline anyway. I doubt they’d even set up a cash fallback if this continues for months.