The steps to receive alerts are as follows:
To get a notification when a SharePoint document or list item is updated, navigate to the file or list item, click the ellipsis (...) menu, and select "Alert Me"; you can then customize the notification settings to specify which changes trigger alerts and how you want to be notified (usually via email).
Key steps:
- Access the item: Go to the SharePoint site and locate the specific file, folder, or list item you want to monitor.
- Open the Page tab at the top of the page
- Select "Alert Me": Click on "Alert Me" from the menu and follow the steps

- Configure alert settings: In the pop-up window, choose the types of changes that should trigger an alert and select who should receive the notification.