The JCQ have published guidance for determining GCSE/A Level grades for 2021.
How much use the grade descriptors are is another question.
Below are links to published resources.
Guidance statement – web page
Guidance Document – PDF file
All guidance downloads – web page with links to PDFs
GCSE Geography grade descriptors in Word format – provided by Internet Geography
Internet Geography has developed assessment materials for AQA GCSE geography, in the style of past papers and come with a comprehensive mark scheme. There are available to Internet Geography Plus subscribers. Log in here or access for one year with a low-cost subscription.