A neighbor asked me about upgrading her breaker box.

I used to know what it is. However now, to see the value on my main
breaker would require climbing on the dryer and using a mirror but I do
know that the box has 4 duplex breakers (for the oven, water heater, AC,
and clothes dryer), 12 15-amp breakers and it has 6 empty slots before I
used one. One breaker is a GFI.

Does that imply how much amperage the house is wired for?

They were built in 1979-80. 3 floors including basement, 3 bedrooms.

It seems to me there is nothing a normal person could want to add that
would require a bigger box. Maybe an electric chair would need more.

??