Its’ very simple to hide all your wp-content files or wp-content directories using .htaccess
What you need to do is to create .htaccess file using Notepad++ and input the below code. Put this inside your wp-content
When someone tries to access your wp-content, they will get this error message
You don’t have permission to access /wp-content/uploads/ on this server.
I’ve zip this file into a folder, place the .htaccess file into your wp-content
Here you can download the zip file htaccessFile