iTunes 12.5.1.21 interface with iPod Classic (2009) software 2.0.4 Star vs Heart Rating
In your preferred playlist chose to display it as a list (song view) and right click on one of the top columns (artist, album, year, etc.) and select 'rating' from the menu.

It may be only visible if you scroll the list view to the right. You can reorder the columns by holding and dragging with the mouse.

Does this work for you?