The Business Card view in a Record Details page helps you get a quick glance at the important details of the record. Users in an organization may want to look at the details, without having to search for them. For this reason, the business card view can be customized in an organization's CRM account. So, if you have a call with a contact, you do not have to hunt for details like the phone number or the account name. You can have it right there in the business card view.
To select fields for Business Card View
To reorder field and remove fields in Business Card View