How do I use Apple Pencil I have a 6th generation iPad 10 inch

Your iPad6 supports the first (not second) generation Apple Pencil:

Apple Pencil compatibility - Apple Support

More information about using an Apple Pencil can be found here:

Connect Apple Pencil with your iPad - Apple Support

Use Apple Pencil with your iPad – Apple Support

The iPad User Guide is also a rich source of information about your iPad - and how to use to use its various features:

iPad User Guide - Apple Support

This article details which Apple Pencils work with which iPads: https://support.apple.com/en-us/HT211029

Do you have the correct pencil?

What happens when you try to use it?

~Lyssa