it depends on the number of participants. but my guess is something between 3 000 and 15 000 participants. The mne project raised 3k addresses. The ELIX project few months ago raised 4000 addresses. btw. its now traded at 5 dollar cents. so don't say an airdrop is worth nothing if it only asks dor email and eth address.
It feels like this project doesn't get that much attentions so I think it will be between 2 000 and 8 000 participants.
Do you make a check for multiple submissions from one ip?
just read that on page 4 already 12k addresses have been registered. So it will be at least 15 to 20k. so everybody would get around 1k to 1.5k tokens