Sample that goes over how to import SDF for texture trough code. And how to change its SDFImportSettings .
This function ensures that sdf is generated for texture.
<aside> 💡 Texture need to be configured to sprite mode, and have sprites defined, function changes only sdf import settings.
</aside>
Select 0_Import SDF : ScriptableObject

Press Fix texture (Ensure that SDF is imported)

See how big-bang.png now has sdf generated inside of it

Before

After
Modify import settings

Press Set SDF Import Settings

See how these import settings gets applied to big-bang.png, and it gets re-imported.

Before

After

Both functions used if pretty simple, just pass persistent texture. And in case of SetImportSettings also provide sdf import settings.
SetImportSettingsis much more versatile then FixTextures, while second one is basically a wrapper around first.
Press Validate button

The validation result will be printed in console