As of now, the club feature is only available on the Duolingo app.

Also, I advise you change your topic to the Troubleshooting forum. If you encounter any more problems that relate to Duolingo, you are sure to get more answers there ^^

To edit your topic, click on the bottom right on where it says "Edit". It should then bring you to a page on where you could edit your whole post. Click on the top left and you can then change your topic from there.