This depends entirely on how dirty the person is, and doesn't really have anything to do with age. A person should bathe at least every other day. If they are very active and sweaty, then they should bathe at least daily.
My 7 year old girl bathes twice a week
You can bathe him/her once a week,and try a flea collar.
a 6 year old should pee around three times a day
There is no "should" for kissing. You do it as often as you feel comfortable.
25 times a day
every day
By the age of 12 most normal children would have mastered how to bathe.
twice a day
every day!
A twelve-year-old who has that height should have a weight of between 90 and 99 pounds. The average twelve-year-old with that height often weighs 91 pounds.
Not totally abnormal, many kids of that age just can;t be bothered to bathe, but as they get older realise the importance of keeping clean. You should try to get into a habit of regular bathing, if you don't you'll find yourself losing friends and becoming an outsider
at least every other day