In this scenario, do you have priority over the electric scooter approaching from the left?

In the video you are coming out of a small street marked with sign D-41 "end of residential area" onto a street in a town; a person on an electric scooter is approaching from the left. You do not have right of way over them. The answer is: no.

The Road Traffic Act states that joining traffic (włączanie się do ruchu) takes place, among other cases, when leaving a residential area, and a driver joining traffic is obliged to exercise particular caution and give way to another vehicle or road user. Sign D-41 marks the exit from a residential area, so when you drive beyond it onto the street, you are not at a junction, but joining traffic - and you give way to everyone, including vehicles from the left, over which you would have right of way at an ordinary uncontrolled junction of equal roads. An electric scooter is a vehicle, and its rider is a road user, so the rule protects it just as it protects a car. The right-hand rule does not apply here. You stop before the edge of the roadway, look both ways and move off when you will not force anyone to change their path or speed; a scooter is quiet and fast, so you look carefully.

Legal basis: Art. 17 para. 1 point 1 and para. 2 and Art. 2 point 47b of the Road Traffic Act (Prawo o ruchu drogowym); § 58 para. 1 of the Regulation on road signs and signals