@DaltonLurnurWith the shield master feat and extra attacks as a fighter, can i attack, shield master shove, attack? Yes.
— Jeremy Crawford (@JeremyECrawford) July 21, 2016
@DaltonLurnurWith the shield master feat and extra attacks as a fighter, can i attack, shield master shove, attack? Yes.
— Jeremy Crawford (@JeremyECrawford) July 21, 2016
You can announce that you are taking the attack action, shove before any attacks and then use both your attacks. It doesn’t specify that it is after an attack.
No. Jeremy Crawford later changed the ruling in 2018 that you have to complete the attack action before the bonus action. His tweet can be found on the internet and it is a highly unpopular ruling.