I lost my case and charging cord for my beats powerless pro headphones. How can I go about getting a new one?

See: 'If your Powerbeats Pro [or charging case] are lost' click here --> https://support.apple.com/HT209590

"If you can't find your Powerbeats Pro, here's what to do.

If you lose your Powerbeats Pro earbuds or charging case, or if they are damaged, find your serial number, then contact Apple Support. If you have the original packaging for your Beats product, you might see the serial number next to the barcode. You might also find the serial number on the original product receipt or invoice."