I don't understand epq!!Watch
The best way to start doing an EPQ is to mindmap things you are interested in researching in this can be anything - it can be related to your alevles/what you want to study at uni or it could be something totally random that you are interested in researching. The most important thing is that it is something that you are interested in as you are going to be spending a lot of time working on your EPQ. Yes, you will need to create the question or statement to answer how, you can do this later on once you know what you will be researching and it will be much easier.
Depending on your school, you are most likely going to have a monitor who will guide you through the process, however an EPQ is a very independent project so they will be there more as a guide rather than a teacher.
You can find some example EPQs online, I will get you the link to the EPQ mega thread in tsr, which is full of what titles people have done as well as a good place to ask any questions you have.
Don't be afraid to ask anything else and I hope this helps
https://www.thestudentroom.co.uk/for...lay.php?f=1454 <- the threads at the top of this place contain all the basic details about EPQs