When a bowler over-steps, resulting in a no-ball, and the batsman's wicket has been disturbed with the ball going to the boundary, then 5 runs are awarded to the batting side. Five runs is split as one for overstepping and four for the boundary. All these 5 runs go into the extras (no-ball) column. However, if the ball touches the bat/glove before hitting the stumps and then goes to the boundary, 1 run is added in the extras column for the no-ball and 4 runs are added to the batsman's score. Either way, the batting side get 5 runs.
More details, including the excerpt below, can be found here and here.
13 - Runs resulting from a No ball - how scored
The one run penalty shall be scored as a No ball extra. Any runs completed by the batsmen or any boundary allowance shall be credited to the striker if the ball has been struck by the bat; otherwise they shall also be scored as No ball extras.