On December 1, 2020, the World Health Organization published an articled titled "Mask use in the context of COVID-19" and in the article it says that there is only limited and inconsistent on the effectiveness of masks in community settings, there were trials on the effectiveness of masks but the trials show very virtually no difference of the spread of the virus in community settings between masked people and maskless people.
Here is the PDF of "Mask use in the context of COVID-19" published by the World Health Organization on December 1, 2020: https://www.google.com/url?sa=t&source=web&rct=j&url=https://apps.who.int/iris/rest/bitstreams/1319378/retrieve%23:~:text%3DThe%2520World%2520Health%2520Organization%2520(WHO,adequate%2520protection%2520or%2520source%2520control.&ved=2ahUKEwih09nwrorvAhVBEawKHc0LAncQFjABegQIAhAG&usg=AOvVaw2_mr0zkuyeOzqiLge-dhLz