It took a long week of trying to build and rebuild the gdal/geos libraries and dependencies and make it work in vercel, but finally it’s working.
You can use a runtime in vercel now called vercel-python-gis@1.0.0
You can see more info (like how to configure the rest of django to work in vercel) in the project page here GitHub - jperelli/vercel-python-gis: Vercel runtime with geos, gdal and proj for geodjango
Happy coding!