On a Macitosh computer you CAN use File > Print > Save as PDF. This…
Vectorworks Tip 367 – Print to PDF
Print to PDF – There is a huge difference between printing to a PDF on a Macintosh or on a Windows machine. Printing to PDF is built into a Macintosh, but before a Windows machine can print to PDF you will need something additional like PDF995 (software that will allow you to print to a PDF file). If you have a Fundamentals version of Vectorworks printing to a PDF is a way of creating a single PDF file from each page. You will need to have additional software to combine these individual PDFs into a single document.