Hello,

The “Shop page Widget Area” (that is situated in Appearance -> Widgets) is responsible for displaying widgets in the Shop’s sidebar.

https://monosnap.com/file/CHOg28KalrZwWiUD9JnhWDr6wQpltn

Also, make sure that you have enabled the Shop’s sidebar via Theme Settings -> Product archive -> Sidebar -> Shop Layout.

https://monosnap.com/file/207RjfZdSZB5Tas1vOxFSUk82GMiK7

Please feel welcome to reach out to me with any questions you may have and I would be more than happy to help.

Kind Regards