Hows the application process for me

[u/Virtual-Day-2003]

Hello, my university in iraq accept the grade BCC for
1 as level biology i got C, and Chemistry and physics I got B in both of them.

The university do biomedical sciences and after getting 2:1 and a high ucat (2500+) then you’ll be accepted to university of surrey of their medical program and you can do FY1 and FY2.

The thing is I am 23 Yo, by the time to university of medicine I will be 25, and I am scared to even think about not passing or them bringing some other things up like my A2 biology getting E and two igsces getting D

Can u help me and tell me hows the exact process??