Install Dropbox For Mac [updated] -

Click "Create an account" to set up your free 2GB plan. Choosing Your Sync Settings

This keeps files in the cloud, only downloading them when you double-click them. This is the best option for saving space on smaller SSDs. Step 4: Granting Permissions (Crucial for macOS) install dropbox for mac

On macOS 10.15+ , Dropbox will request:

Open your folder and double-click the DropboxInstaller.dmg file. Click "Create an account" to set up your free 2GB plan