Why do you feel that you need a for loop? It looks like you just need:
if (genderMale.checked && age < 50 && e >= 15 )
{
subtotal += 1;
}
if (genderMale.checked && age >= 50 && age <= 85 && e >= 20)
{
subtotal += 1;
}
if (genderFemale.checked && age < 50 && e >= 20)
{
subtotal += 1;
}
if (genderFemale.checked && age >= 50 && age <= 85 && e >= 30 )
{
subtotal += 1;
}
if (lek > 11 )
{
subtotal += 1;
}
if (fib > 400)
{
subtotal += 1;
}