Do I start making up these prayers from the age of 9 or from the age I got my period? Because I do not know when a female should start praying. Also what if I was on my period during the kusuf, am I still required to pray that qadah?
You have to pray Qadha from the age of 9. Girls become baligh when she completes her 9 years according to lunar(Islamic) calendar. While woman she is in her period then salat is not wajib therefore qadha is also not wajib.