Asset Advisor for Services is included in the license for ThingWorx SCP. Please reach out to the Sales team for obtaining the proper entitlement. Once you have done so, the software called Service Apps can be downloaded from PTC Support at the following url: https://support.ptc.com/appserver/auth/it/esd/product.jsp?prodFamily=TWA
Asset Advisor for Services is a starter app designed to provide out of the box capabilities but built with the intent that it can be customized. The customization guide can be downloaded from the following url: https://support.ptc.com/WCMS/files/173135/en/ThingWorxManufacturingServiceAppsCust_8-1-0.pdf
Please let us know if you have further questions.