Hi @SüleymanKILIç, to download your course's closed captions follow these steps:
Navigate to the "Captions" tab from your course management tools.
Select English from the dropdown menu at the top of this page to see your auto-generated caption files
For each lecture listed, click the download button to save the .vtt file to your machine
The files that you will download are called .VTT files, you can open them up with WordPad or even Microsoft Word in between other programs. For more information about subtitles, take a look at our F.A.Q. article. 🙂