The data on the platters is likely still there. The controller board tends to get damaged from ESD.
Now the fun part! If this is your only copies of your stuff and you need it badly then you’ll need to find someone with the needed parts and skills to replace the controller board. While expensive, it’s likely the safest way.
Or, you’ll need to find another drive (an exact match) which is working to salvage the controller from to get your drive going again. This is not an easy! And you could end up with two dead drives $$