Use a tool like 7-Zip to extract the PSA Diagbox 9.87 -x86-x64- Multilingual.zip file.

Diagbox 9.87 includes updated database files encompassing vehicle models manufactured up until its release cycle (roughly late 2020 / early 2021).

⚠️ : Standard OBD2 ELM327 scanners will not work with this software. You must use a Lexia 3 VCI (Vehicle Communication Interface) . For the best compatibility with version 9.87, a "Full Chip" firmware Revision C interface is highly recommended to avoid communication drops with newer vehicle ECUs. Step-by-Step Installation Guide

To help tailor further assistance, could you clarify you are looking to diagnose, and whether your ZIP file contains a Virtual Machine image or a native setup file ? Share public link