Well, the important thing for the future is, where possible - don't move files in Windows Explorer. Drag them around in the Library Module folders list instead.
However, if you do move them around in Explorer, then when you try to look at them in Lightroom you see a ! by each file that you've moved, or a ? by each folder if you've moved the folder. You can click on the file or right-click on the folder, and you get a dialog to tell Lightroom where the folder of file have gone.
If you've re-imported them, you may well have lost the edits. If the edits are saved in xmp files you might be able to select files and choose Metadata... and "Read Meta from file", but that may import edits but it won't import edit history. You'll also lose collections.
Better is to go back to a backup catalog, and do what I said in the 2nd para, and tell Lightroom where the files have gone - don't reimport.
Edited, after Phil added some extra comments
Edits are stored in the catalogue, and also optionally in xmp files. You say you don't have the xmp files - I guess that means you don't have the option "Automatically write changes into XMP" checked in catalogue settings. That means the edits are only in the catalogue. If you re-import the files, you start with a clean sheet. No edits. If the old entries are still there - the ones for where the files used to be (with ! or ? by the file or folder name) - then you can point the old entries to the new location by right-clicking as I said above. If you've lost or removed those old entries, then the edits are also lost.
Have you any backup catalogues? By default, Lightroom prompts you to make a backup once a week, in which case you can open the latest backup (make a copy first) and then point the entries to the new locations as above.
