There is no direct command-line interface (CLI) method for activating the AccelerateWP plugin for WordPress. Activation of WordPress plugins is typically done through the WordPress dashboard or programmatically within your theme or custom plugin.

To activate AccelerateWP, you would typically follow these steps through the WordPress dashboard:

1. Log in to your WordPress admin dashboard.

2. Navigate to the "Plugins" section on the left-hand menu.

3. Find the "AccelerateWP" plugin in the list of installed plugins.

4. Click the "Activate" link below the "AccelerateWP" plugin.

This activates the AccelerateWP plugin, and you can then configure its settings through the WordPress dashboard.

Please note that the availability of CLI commands or methods can change over time as new versions of plugins and WordPress are released. Therefore, it's a good idea to check the official documentation or support resources for AccelerateWP for any updates or CLI options that may have been introduced since my last update.

If you have specific requirements or need to automate tasks related to AccelerateWP, you might need to explore custom scripting or development solutions, but these would typically involve working with WordPress APIs rather than directly activating plugins via the command line.