They haven't. They have done scale model and simulations, but nothing actually to space.
Article from 2022 said they planned on having a real launch by 2026: https://www.space.com/spinlaunch-aces-10th-suborbital-test-l...
...however the company is struggling. No website updates in a long time, lots of C-suite staff changes.
Would love to see this work, but I think it's dead.