how can I copy a whole photo folder from ipad to mac ?

Set up iCloud on all your devices

Keep your photos and videos up to date with iCloud Photos

Then there is No Need to copy form iPad to Apple Computer.

The folder on the iPad will just appear after syncing to the Apple Computer in Photos.

iOS is for iDevices and macOS is for Apple Computers.

From my experience, Apple expects the user to perform their due diligence and their own research.

If the user can get an external drive that can connect to the iPad and can be recognized in iOS. Then, Copy the 2 TB of photos to that drive and hope and pray the same Drive can be used on macOS.

Do not have any suggestions as Do not use iPads.

As best another suggestion outside of what has been already presented >>

Sync your iPhone, iPad, or iPod using your computer

OK.

Since there have been several really good suggestions provided and none seem to work.

It begs the question, what actions has the user taken to fix this issue ?

That is unless there might be some other agenda involved ?

Transfer photos and videos from your iPhone, iPad or iPod touch to your Mac or PC – Apple Support (AU)

You could create a new album in Photos when importing to match what is on your iPad.

Send them via WeTransfer https://www-icreatemagazine-nl.translate.goog/workshop/hoe-werkt-wetransfer-op-iphone-ipad/?_x_tr_sl=nl&_x_tr_tl=en&_x_tr_hl=nl&_x_tr_pto=wapp

Does it work if you make a new folder on your mac, select all the pictures in a folder on your ipad and copy all the selected photos to the folder on your mac?