A small window appears with the net web surfer version number.

The first number, located before the parenthesis, is the current version of Safari.

The longer second number (located inside the parentheses) is the WebKit/Safari Build version.

About Safari menu in macOS

To see the iOS version currently installed on an iPhone or iPad, follow the instructions below.

The number that appears at the top of the screen next to iOS is the version number.

For example, if your iPhone or iPad is running iOS 11.2.6, then it is running Safari 11.

Safari Version 12.0.3 window in macOS

If your rig is running iOS 12.1.2, it is running Safari 12, and so on.

iOS screens showing General, Software Update and iOS 12.1.2