what is the difference between the scottish rite and emulation

Emulation working belongs to the Craft, providing a standardized set of ritual procedures and ceremonies for the first three degrees—Entered Apprentice, Fellow Craft, and Master Mason—under the authority of a Craft Grand Lodge, as described on the United Grand Lodge of England website.

In contrast, the Ancient and Accepted Scottish Rite constitutes an independent system comprising 33 degrees governed by its own Supreme Council, as set out on the Supreme Council of the Ancient and Accepted Rite website. Rather than conferring the Craft degrees directly in jurisdictions aligned with the United Grand Lodge of England, the Scottish Rite does not confer the 1st, 2nd, or 3rd degrees itself. Instead, its Supreme Council accepts the three Craft degrees conferred under a Craft Grand Lodge working as equivalent to the first three degrees of the Ancient and Accepted Rite before conferring its subsequent degrees.