You go for scaling first, because of accumulation of tarter only your lower teeth become mobile, to treat that you may go bone grafting. And overbite can be treated by orthodontic treatment with braces.
Hi. Scaling/ Cleaning is done only by a dentist. After that you can maintain your oral hygiene which is in your hands. Around 1500-2000 depending upon your deposits, clinic and place the charges varies.
Home remedies are not for 100% problems, if you are not getting results then visit the experts to get the required results. You are just 13 years old so my advice for you is to just brush properly twice daily, don't try here and there for astonishing results.