where is the touch id spot on ipad mini 6?

For the iPad mini6, the TouchID sensor is located in the physical top sleep/wake button.

If you are experiencing difficulties with operating the iPad, you’ll need to review its operating gestures. To save you looking deeper, you’ll find the majority illustrated here:

Learn advanced gestures to interact with iPad - Apple Support

The iPad User Guide is a rich source of frequently overlooked information about your iPad and iPadOS. The Guide is available both online using a web browser (such as Safari), or as an Apple Books download:

iPad User Guide - Apple Support

https://books.apple.com/book/id1567104892

The Tips App, installed by default on all new models of iPad, provides a brief introduction - and leads you to the User Guide. In case you missed it, here is a link to the Tips App:

https://apps.apple.com/gb/app/tips/id1069509450

Apple also has a huge YouTube Channel - containing videos and feature guidance:

https://www.youtube.com/user/Apple

It is over the entire sleep/wake/power button.

Answer: You can't, Newer iPads are made for using it with GESTURES, iPads now that dont have a TouchID hoe button it changed to power button, Like the Android Phones, You will need to adapt since if you purchased the iPad you cant go back.

To clarify, put a finger anywhere along the bottom edge of the iPad’s screen and swipe up about 1/3 way up the screen to return to the Home screen

To familiarise yourself and to learn how to use your new iPad and iPadOS, download and install the iPad Users Guide to the Apple Books app

Found here. Tap the link below.

https://books.apple.com/us/book/ipad-user-guide/id6443147167

Best of Luck to You!

Just swipe your finger down to up, starting at the beginning of the screen

You are very welcome. It really is very straightforward - and very quickly becomes second nature.