You can bathe your baby as often as you want too and if you want to bathe your baby everyday that's perfectly fine as well.
I've always washed my baby off in a baby bath tub at least once per day especially if the baby drooled on themselves a lot.
You can usually get by without bathing your baby for a few days per week and some people bathe their babies every few days to once per week.
I preferred to bathe my baby everyday to keep them clean because even myself I can't go even one day without bathing or showering otherwise I feel icky.
So I wanted to keep my babies clean just like I want to keep myself clean so I bathed the babies everyday.
You can use a washcloth to at least wash the baby down everyday if you don't want to give them a bath everyday.