all launch attempts where the goal was to get to earth orbit or farther will count (transatmospheric tests like the last one would also count, so we're at 1 as of 24.04.2023)
i will use whatever source i deem appropriate, starting with https://en.wikipedia.org/wiki/List_of_SpaceX_Starship_flight_tests#Orbital_Flight_Tests_(2023%E2%80%93)