I don't know why apple charged me $9.99

See this Apple article: Billing and Subscriptions

https://support.apple.com/billing

View your puchase history,

Being charged 90.99 every couple of hours and I don’t know what it is

See my previous post.

I have charges in my banking that I am not sure what they are can you explain

one of them is 203809437452.

or if you can tell me where to go to check these out