The phrase "doth about it" is an archaic way of saying "does about it". The spelling of "doth" is phonetically transcribed as /dʌθ/, with the "th" being pronounced like the "th" in "thumb". This spelling was commonly used in Early Modern English, but fell out of use in modern times. In modern English, the word "does" is usually used instead, which is phonetically transcribed as /dʌz/ (with a "z" sound instead of the "th" sound).