Have you been able to export other files in the past?
Is this a new install?
Welcome to the forum,
What John's image shows is what I have as well. Can you post an image of what you are seeing?
Are you using a student seat of SolidWorks?
I suspect that is the issue.
student versions lock out all file save as other than SW files....aka exporting! this is because you are learning SolidWorks and not to use for comercial use. Now if you have access to the educational version at shool you will be able too save an iges,step, parasolid, sats, ProE.....