GCSE help

Hi I have a sibling who is doing GCSE higher maths OCR do you know where I can find the revision topic list for him. Because when I did mine we had a topic list with all the subjects that would be on the exams on them

Hello! It's impossible to say what will be in the exams for sure, as they switch it around every year. After the COVID-19 lockdowns because people had missed out on a lot, topic lists were given out so students could prepare specifically for what was going to come up, but I'm afraid they don't do it anymore.
That said, here are some lists of all the topics they need to know:
https://www.bbc.co.uk/bitesize/examspecs/zcty7hv
https://www.ocr.org.uk/Images/379302-revision-checklist-higher-tier.docx
https://corbettmaths.com/wp-content/uploads/2021/12/OCR-Higher-Checklist.pdf.

Hope that helps! Best of luck with their exams!