Hi, I'm developing a custom theme and I'd like to understand how to retrieve the data entered in the metaboxes when creating a post. I created the single-music.php page to handle my custom post type. and I would like to recover the entered information such as the url of the audio, the title and the artwok. I understand you use CMB2 to manage custom fields, but I can't figure out how to fetch the data

I don't have a sonaar account, I'm using the free version of the plugin