You can view and download the audit logs by using the console. On the Databases page, choose the DB instance to show its details, then scroll to the Logs section.
To download a log file, choose that file in the Logs section and then choose Download.
You can also get a list of the log files by using the describe-db-log-files AWS CLI command. You can download the contents of a log file by using the download-db-log-file-portion AWS CLI command. For more information, see Viewing and listing database log files and Downloading a database log file.
Hope this information can help you
Best wishes
Vicky