const profile = {
  name: "Madasaamy",
  age: 80,
  kids: [
    {
      name: "Soori",
      age: 57,
      kids: [
        {
          name: "Miller",
          age: 29
        },
        {
          name: "Charles",
          age: 26
        }
      ]
    }
  ]
};

let age = 0;

function calculateAge(profiles) {
  profiles.forEach(e => {
    age += e.age;
    if (e.kids) {
      calculateAge(e.kids)
    }
  });
}

calculateAge([profile]);
console.log(age)