My ipod 6th gen wont charge

Did you already try the general troubleshooting, like using another USB cable / adapter or

making sure, that the docking port is free of debris or lint?

More tips in this article:

If your iPhone, iPad, or iPod touch won't charge - Apple Support

If the general troubleshooting tips did not work, you'll have to get the device checked by contacting Apple Support, or visiting an Authorized Apple Service Provider next to your place,

iPod - Official Apple Support