Even if you haven't received a score, you can (and should) still enter an abstract
In particular you should note:
If you are unable to receive a score during the unofficial phase, then you can still submit, but the work should be of very high quality and you should include the cross validation results of your algorithm on the training set.
By "high quality", we mean you need to convince the reviewers (and us) that you know what you are doing. Poorly written abstracts that don't follow the guidelines at the link above will be rejected. Over many years we have found that the quality of the abstracts (and the authors' abilities to follow the instructions) are closely related to the quality of the entries. Please also note that abstracts that have a high probability of significant generative AI-created content will also be rejected for the same reason.
We know your work (and title) will change, and you will be able to do that closer to the end of the Challenge. Unfortunately we are unable to change the timing of the abstract submission - we do not control that, and the conference needs time to review and plan for the event.
Best of luck