Beautify for Adobe Photoshop is

not

a standard Photoshop plugin or feature. There[SQ]s no officially supported or widely known Photoshop add-on with that name.

It[SQ]s possible :

*

It[SQ]s a lesser-known or niche plugin:

Many small developers create Photoshop plugins, and some might not have widespread recognition.
*

It[SQ]s a custom-made plugin:

Someone may have created a plugin internally for their own use or a small company, and it[SQ]s not publicly available.
*

It[SQ]s a misspelling or mistaken name:

You might be thinking of a similar-sounding plugin or a feature with a different name.
*

It[SQ]s a separate application:

The "Beautify" might refer to a standalone image editing app that works alongside Photoshop, not as a plugin within it.

If you encountered this name somewhere, providing more context (where you saw it, a website, a forum post, etc.) would help determine what it actually is.