When you say the ball bounced out of the glove...was it a short hop throw or simply a drop? If it was a drop and the ball beat the runner then it is an E3 all runs unearned. Theoretically the 1B can pick up two errors on the play - on for allowing the runner to reach and a second if any of his action allowed the other runners to advance more than one base.
If it was a bang - bang play then the scorer can reasonably determine that the runner beat the rap and then all 3 are earned. He could then charge an error for allowing the other runners to advance as previously noted but the runs would remain earned.
If a bounced throw E2 and all unearned.