Downloading from iPod to Macbook

If its ipod classic do this things

1. go to itunes on left side is a bar scroll downn until you see devices> click on the ipod > On the bottom left you have a bar, click on it and select a playlist, then put Autofill on the bottom right and the playlist will be transferred to your mac

See if anything here helps:

Recover your iTunes library from your iPo… - Apple Community

Hi i want to help you with this problem but what model is the ipod?

it is ipod classic?

Oh try navigate the playlist to macbook libery