Avoid any third-party website offering a standalone .exe file claiming to be "Shader Model 2.0."
Microsoft no longer hosts DirectX 9 on its main site, but the legitimate offline redistributable is available via official archival channels.
The following guide explains what Shader Model 2.0 is, why it is missing, and the only legitimate ways to "enable" or update it. Why You Can't "Download" Shader Model 2.0
DXVK translates DirectX 9 calls (including SM2.0 shaders) into Vulkan. This can allow a modern Vulkan-capable GPU to run old SM2.0 games without native support. Not for extremely weak hardware.