XE_FILE_TARGET_TVF WaitType in Azure SQL
You can find the answer here: https://www.sqlskills.com/help/waits/xe_file_target_tvf/


  This wait type is when a thread is waiting for data to be returned when using the sys.fn_xe_file_target_read_file table-value function to read event data from a file target.


this has no affect on SQL server performance and also applied to SQL on premise and Azure SQL.