Emon, A.M.; Ahmed, R. (Eds.), The Oxford Handbook of Islamic Law, 2018, ISBN 978–0–19–967901–0, states “Qur’an has no more than 500 verses of legal import” (page 406, Chapter 16, The Classical Period, Scripture, Origins, And Early Development by Mariam Sheibani, Amir Toft, And Ahmed El Shamsy).
A source for that information is not provided.
Would you kindly help us and tell me who has done the study that found that number?
Regards.