During pre-COVID times, this would be considered a way too low score to receive an ITA. Post-COVID, candidates with scores around 420 have received invitations in most rounds, however, it’s all luck of the draw. If there are candidates with higher CRS scores, then you’re simply not going to get through. If there aren’t, you will. Anything you can do to improve your CRS score will increase your chances of receiving an invitation to apply.