is there any filter offered by metabox for their any of the file upload field type? I want to create a auto rename function to include prefix/suffix for files uploaded through that custom field "file uploader".
Meta Box also uses the WordPress function media_handle_upload() to upload the file to the media library. So you can use the same filter hook to modify the file name. Read more about the hook in the WP documentation https://developer.wordpress.org/reference/functions/_wp_handle_upload/