Well breaker tripped we ant reset it
Assuming the humming sound is your well pump (were you able to hear it when it was working?) then it either has something stuck inside or it has simply seized up.

If you cannot normally hear the well pump, and the humming sound comes from the breaker itself, that means it's definitely seized and is drawing a LOT of power until the breaker trips. Stop doing that.

Either way, time for a new pump.

Changing a well pump is one of those things where if you have to ask how, you need to call someone. Electricity and water don't get along very much and mistakes can be costly. Like ruining the new pump and having to buy a third one, causing the well sides to collapse and therefore needing to re-dig the hole, or someone getting electrocuted and dying.

Any plumber in your area will know exactly what you need, and will likely be able to fix it the same day.