How to access my email on my laptop?

See the following Apple Support article for information on accessing iCloud email at www.icloud.com using an Internet browser: Use iCloud Mail on iCloud.com - Apple Support

For Outlook on a Windows device, see: Set up iCloud Mail, Contacts, and Calendar in Outlook on your Windows computer - Apple Support

Also see: iCloud Mail server settings for other email client apps - Apple Support

Note that you will need two-factor authentication on and will need to use an app-specific password instead of your usual Apple password when using a 3rd party mail app such as Windows Mail. See: Two-factor authentication for Apple ID - Apple Support and Sign in to apps with your Apple ID using app-specific passwords - Apple Support