According to Official Guinness Records,
The most penalty kicks scored by a football (soccer) goalkeeper is 69 scored by Rogério Ceni (Brazil), playing for playing for São Paulo Futebol Clube, from 18 April 1999 to 26 August 2015.Rogério Ceni (Brazil) is also the football player scoring the most goals overall as a goalkeeper.
For a complete list of 2015 records, please visit 2015 Guinness Records in Brazil.