urgent question

not sure if anyone on here would even know but, i’m 17, in the UK and won’t be in full time education from now on as i don’t enjoy it and i’m hoping to get a job. i had an appointment a while ago just to check, they said my front teeth protruded 14mm (yes lol) and my lips push forward when i close my mouth so i’m assuming i’m a grade 5. they haven’t told me i need to pay anything, i get my braces on july 17th. i’m wondering if id have to pay and if so how much? or will it be free as at the beginning of treatment i was 17 in full time education? i need braces more than anything but im broke, nobody will hire me.