LightBurn has a variety of tools to build geometric primitives as well as lines and curves. It also has tools for text and the ability to transform text and shapes in various ways. However, there is no free-form pen tool at the moment.
If you have more specific needs you can build your designs in an outside application including those on iPad and import those designs into LightBurn.
LightBurn can import a wide variety of the most common vector and raster file formats (e.g. AI, PDF, SVG, DXF, PNG, JPG, TIFF…)
Take a look at this older topic for specifics:
What files does lightburn read? - LightBurn Software - LightBurn Software Forum