So I was locating missing files on Lightroom, but on accident I clicked on the same file name of the image I was trying to locate but it was the same file name for another image so now it's replacing every single file with that folder of images & im about to cry.
im a wedding photographer and it's replacing a wedding gallery I'm suppose to send out tonight with another wedding. PLEASE someone tell me I can stop or undo this. I've tried so many things and it won't undo
Sounds like you did a "find missing folder" or a "find missing file" and navigated to the wrong place.
There is no "undo" for this. The best you could hope for here would be to restore the old catalog from a backup made just before you attempted the fix.
I would try the action again, probably at the folder level, by doing a "relocate folder" in the Folders panel then navigating to the correct folder. Use Mac Finder or Windows File Explorer to find the correct folder first.