Serato DJ Pro can import your iTunes™ library allowing you to play your iTunes music and access playlists.
To enable this feature go to the SETUP screen, open the Library + Display tab and check the Show iTunes library box.

NOTE: The iTunes library can be minimized by pressing the small triangle next to the iTunes folder icon.

NOTE: You may also need to enable iTunes to share it's XML with Serato software. To do this, navigate (in iTunes) to Preferences > Advanced, then enable the Share iTunes Library XML with other applications option.

Setting up Apple’s Music application with Serato DJ Pro (macOS only)

Apple's Music app has replaced iTunes for macOS users on 10.15 Catalina onwards.
If you are a current macOS version, please ensure you have set up the Music application as per the Using Apple's Music application (formerly known as iTunes) on macOS with Serato DJ Pro & Lite software article.

For Windows users, Apple's Music app library import is not supported on Windows in Serato DJ Pro.