I’m sorry to hear that happened to your new car!
Whether detialing removes scratches depends on how deep the scratches are. If you try running your finger off the fissure, you’ll be able to tell whether it is just along the surface or whether it’s deeper.
The benefits of detailing is that it gets your car really clean—washing, interior cleaning, and exterior wax and polish are all parts of the detailing process. If the scratches are small and aren’t deep, then the wax and polish used in the detailing process can remedy the issue.
However, deep scratches will need to be addressed by a body shop. Detailing may cover up these deeper scratches in the short term but are not a permanent fix.