Acts wasn’t a worship service. They were just gathered together. They went outside and were confronted about their behavior.
Acts 2:11”....we do hear them speak in our tongues THE WONDERFUL WORKS OF GOD”.
“And they, continuing daily with one accord in the temple, and breaking of bread from house to house, did eat their meat with gladness and singleness of heart, PRAISING GOD,....”. Acts 2:46,47
Is praise of God not worship, in your mindset?