Listen to lossless audio in Apple Music on Windows
If you subscribe to Apple Music, you can play and download music encoded using the Apple Lossless Audio Codec (ALAC), which makes files smaller while preserving all the original data in the file. In Apple Music, lossless music is available in two formats:
Lossless: Up to 24-bit, 48kHz
Hi-Res Lossless: Up to 24-bit, 192kHz
Albums and songs available in lossless have the Lossless button 
next to them.
Note: Apple Music and lossless aren’t available in all countries or regions. See the Apple Support article Availability of Apple Media Services.
In the Apple Music app
on your Windows computer, select the Sidebar Actions button 
at the top of the sidebar, choose Settings, then select Playback.Do any of the following:
Turn on lossless audio: Turn on “Lossless audio”.
Select lossless audio quality when streaming songs: Choose one of the options from the Streaming pop-up menu.
Select lossless audio quality when downloading songs: Choose one of the options from the Download pop-up menu.