Someone at work mentioned they only shower once a week, and said it so matter of factly as though any more than that is too much. He doesn't smell (that I notice).
For myself, before covid it used to be every day, sometimes twice a day.
During lockdown I started going 4-5 days between showers. I think I was suffering from depression of at least struggling with my mental health back then but didn't realise.
Once I started going back into the office, this increased to every other day.
I'm now considering dropping a day so if I shower Monday, the next day being Thursday (unless very hot like currently) to save money on water and electric.
I just wanted to see what most other people do, so thanks for that.