It appears that DAZ Studio 3D animation software supports Autodesk Kaydara 3D format (.fbx), so you may be able to export .daz files as .fbx files using the default export function. But perhaps other similar programs with support for DAZ and Kaydara formats may be of help as well.
Convert DAZ Studio scene file to Autodesk Kaydara 3D data exchange format.
We found 2 software records in the database related to .daz to .fbx file format conversion.
Microsoft Windows software - convert daz to fbx on Windows
A 3D animation software
Convert from daz file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned daz to fbx. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert daz to fbx on OS X
A Mac version of the popular modeling tool