Explore the detailed guide on How to Check the Version and Build Number of Windows 10 below.
Method 1: Check Windows 10 Version and Build Number using command
Press Window + R keys -> type Winver -> press OK:

After pressing OK, the About dialog will display information about the version and build number of your Windows:

For Windows versions with 4 digits related to the release date, such as version 1703, it indicates the release in March 2017.
Build 15063.674 is an update released on 10/10/2017. Depending on the Build code, you can identify the update version of Windows.
Method 2: Check Windows 10 Version and Build Number by viewing information in the Settings dialog
Click on Start -> select the Settings icon:

The Settings dialog appears, click on the System option:

Scroll down and select About -> all information about the version and build number will be displayed on the right side of the screen:

With these simple steps, you can check the version and build number of Windows on your computer, helping you determine if your computer needs the latest updates. Good luck!