Hi LindaSchafer!
Thanks for reaching Microsoft Community. We're here to help and let's work on this together.
Regarding your query, if you meant using your Surface pro as an external display, yes you can via a cable. And you can also do it wirelessly through Miracast, see through this link Connect to a projector or PC - Microsoft Support.
Please let us know how it goes. We look forward to hearing from you.
Greetings,
RodelioP.