Your event's host will provide you with a web address (http://event.rsvpify.com) to visit to complete the RSVP process. Alternatively, the host may have chosen to add their RSVP form to their website (http://www.theirwebsite.com). Your host may have also provided you with a password allowing you to access their RSVP.
For privacy reasons, RSVPify does not provide a searchable database of events and cannot discuss an individual event with anyone but that event's host. Thanks in advance for your understanding!