I can't say for sure because I myself have not been on an admissions committee, but I would bet A LOT of money that since literally thousands of people apply to the top programs and over 90% won't get in, they will not verify until they are at least at the interview stage or even after that (admit decision/enroll decision) because it would just be too big of a pointless time-waster.
Erika, thank you so much for your help!
Do you know what is the overall process with the scores - do they verify them as they read an application or it is rather final stage after the decision already had been made?
SBCErikaOlson
A ha -- well that is a very important bit of context that I didn't have before! If it actually SAYS IN THE APP that you can put 0 if the score is unavailable (which is the situation in your case), then there is definitely nothing to worry about and you should absolutely not contact them. I have never had a client in this situation and do not access the online app myself, so I was not aware of those instructions.