Deploy Your Configurations
Before you can run a quick action based on a Lightning web component, you need to deploy the relevant code artifacts to your org. Components and quick actions can be deployed using the Onboarding Wizard or manually with Visual Studio Code.

In Visual Studio Code, right-click on a component or quick action and select SFDX Command: Deploy Source to Org. This action pushes your Offline Starter Kit project configurations for the LWC Quick Actions upstream to the Salesforce org that’s connected via your Visual Studio Code development environment.

You might need to clear caches, and quit and restart the app before changes to LWCs are active.