The vCard View provides a downloadable file with contact information in vCard format.
Add a Table containing the contact information.
Add a Query based on this Table, containing all the relevant fields.
Add a vCard View component.
Configure the VCard View component:
On the configuration panel, map the various fields in the Query to the vCard fields. (Not all fields are required)
From the Toolbox, choose Edit Text / VCard Link
On this surface add in the content that will be seen on the page - typically an icon or a phrase such as "Download vCard".
Select this content and choose the Link Picker, to make it into a link. In the Link Picker, choose vCard File.
Embed the vCard View onto a Page.
When the user clicks on the link shown by the view, they will download a vCard file.