If you just need to export one video, the trial version of Muvee Reveal X typically allowed full editing but added a watermark. Since you can't unlock it, consider screen recording the preview (though quality will suffer).
Some HP, Dell, or Lenovo computers came with a "bundled" version of Muvee Reveal X. product key muvee reveal x
If your key came with a pre-built PC (like an HP Pavilion), the key was often printed on a yellow sticker attached to the side of the computer case or the back of a laptop. Over a decade later, that sticker is probably rubbed off or the computer is long gone. If you just need to export one video,
If you cannot recover your Muvee Reveal X key, consider this a blessing in disguise. Video technology has advanced significantly. Here are three free or cheap alternatives that perform the same "auto-editing" job as Muvee, but better. If your key came with a pre-built PC
You do not need a product key for Muvee anymore. There are superior, completely free video editors available today: