You can also scroll down the A-Z list and find Skype through there or search for Skype using the Cortana search bar. This is located on the bottom left of your screen. To start Skype for Windows 10 - select the ‘Start menu’.
If you are not logged in with your Microsoft account, you can still follow the on-screen instructions that appear when you click the Skype icon, and use either an existing Skype or Microsoft account to sign-in, or create a new Skype account altogether. All you need to do to set it up is log in with your Microsoft account, click the icon from the Start menu, and provide any information you are asked for. Skype (which is now owned by Microsoft) is available in Windows 10 as a built-in app.