The MassageBook schedule is not optimized for printing. You do, however, have several options!
MassageBook offers an Appointments report which includes the Date, Time, Client Name, and Appointment Cost for all future appointments on your Business Schedule. This report can be both printed and exported. You can find it under your Sales > Reports section.
Additionally, you can capture an image of the schedule using a screen capture tool, save it to your computer, and print it from there. If you are unsure how to take a screenshot, a quick online search regarding your specific device should yield good results. Also, your browser should allow you to zoom in if you want to capture a larger area.