I deleted Touch ID capability by mistake from my system settings. How can I restore Touch ID capability?

Removing a fingerprint shouldn't make the Touch ID preference pane disappear.

Try booting into Safe Mode then restart normally. Sometimes that will fix anomalies.

How to use safe mode on your Mac - Apple Support

Something you can try…

While in the Finder press command shift G, in the window that opens paste in the follow line and press return…

/System/Library/PreferencePanes/TouchID.prefPane

Dbl-click on TouchID.prefPane and see if it will open.

Cycle the power switch on your keyboard. If that doesn’t work, connect the keyboard to the Mac with lightning to usb cable. It should restore TouchID.

Really suggest the user refer back to suggestion from @Barney-15E and follow all the suggestions in the order that were presented.

The Touch ID sensor in the Touch ID Apple Keyboard must communicate with the Computer.

If the Keyboard is not communicating with the Computer - the Touch ID in System Setting may disappear only to re-appear once the communicated is re-established.

Re-Installing the Operating System may not be required

EDITED

You're welcome.

.

Then either follow the posting above this one or have the Keyboard evaluated by Apple

Some have been known to fail

Edited. removed my comment.

Randall_2023 wrote:

To open the 'go to folder' option in Finder is Shift + command + G.

You realize there's no difference? 🤣😎

Randall_2023 wrote:

Edited. removed my comment.

Too late. 🙂

see above. At first glance I thought you had only typed shift + g. And yes......I do realize that.