Scroll down where it says ' Get assessment and support materials' Then pick your qualification ie GCSE or A-level from the list. Then where it says specification, there's a list of subjects that'll come up, pick yours. Then click 'see materials'.
For some subjects, like sociology, the webpage looks as though there's only past papers. If this is the case for your subject, then scroll down and there should be a list of new papers under the section '2021 assessment materials'.