Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See page_maxonapi_getting_started_foundations_cinema_parameters.
Parameter: Export to USD Layer
USDEXPORTER_EXPORT2LAYER
Parameter: File Format
USDEXPORTER_FILEFORMAT
Parameter: Zipped (*.usdz)
USDEXPORTER_ZIP
Parameter: Cameras
USDEXPORTER_CAMERAS
Parameter: Instances
USDEXPORTER_INSTANCES
Parameter: Lights
USDEXPORTER_LIGHTUNITS
Parameter: Geometry
USDEXPORTER_GEOMETRY
Parameter: Normals
USDEXPORTER_NORMALS
Parameter: UV
USDEXPORTER_UV
Parameter: Vertex Color
USDEXPORTER_VERTEXCOLORS
Parameter: Display Color
USDEXPORTER_DISPLAYCOLOR
Parameter: Materials
USDEXPORTER_MATERIALS
Parameter: Bake Materials
USDEXPORTER_MATERIALS_BAKETEXTURES
Parameter: Width
USDEXPORTER_MATERIALS_WIDTH
Parameter: Height
USDEXPORTER_MATERIALS_HEIGHT
Parameter: Resize Textures
USDEXPORTER_MATERIALS_RESIZE
Parameter: Format
USDEXPORTER_MATERIALS_FORMAT
Parameter: Format
USDEXPORTER_MATERIALS_FORMAT_USDZ
Parameter: Depth
USDEXPORTER_MATERIALS_DEPTH
Parameter: Animation Range
USDEXPORTER_ANIMATION_FRAMES
Parameter: From
USDEXPORTER_ANIMATION_TIMEFROM
Parameter: To
USDEXPORTER_ANIMATION_TIMETO
Parameter: USD_EXPORTER_MATERIALS_BRIDGE_INFO
USD_EXPORTER_MATERIALS_BRIDGE_INFO