I accidentally moved my Documents folder to Trash.

If the item in the Trash is an alias (or symlink) it will delete the alias, not the original.

Where did you move it from?

If you moved it from the Sidebar, then all you did was remove the Documents folder from the Sidebar (but I'm not quite sure how that would end up in the Trash).

Confirm there is nothing in the folder in the Trash?

And, confirm that if you click on the Documents item in the Sidebar, you see all of your documents?

If both of those are true statements, then you don't need to worry about the item in the Trash.

qx49 Said:

"I accidentally moved my Documents folder to Trash.: I accidentally moved my Documents folder to Trash. It was no longer under my Favorites list in Finder, but the Documents folder in Trash *seems* to be empty.[...]"

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To Get Documents Back:

I recommend you backup your Mac, and then reinstall the macOS.

Reinstall the macOS:

1. First, Back up your Mac:

Create a Time Machine backup of your Mac, so that you can have something to restore your Mac from, should anything go wrong with the reinstall.

2. Then, Reinstall the macOS:

Nothing would be deleted. It's just that items that have become corrupted or deleted, would be replaced or reinstalled back to where they should be. Go Here: How to reinstall macOS from macOS Recovery - Apple Support

Do you have a TM backup just in case?