The deployment of a project on Google Apps Script is used to make your script available to end users or to execute specific functions from the web, via API, or by other users, in a controlled and professional manner.
Detailed Procedure:
1. Log in to Apps Script
2. Click on "My Projects" and select the project you created earlier (If there are no projects, go to the following article Creating an Apps Script Project):
4. Click on "Deploy > New Deployment":
5. Then click on "Deploy":
6. Copy the "Deployment ID" and then click on "Done"