I'm not eligible for this airdrop, maybe because I didn't meet some of the criteria that should have been met
That is the reason for sure mate. Anyways, don't worry because I read that a lot of users here also missed this drop. There are some who knows it but still not qualified for it. One reason is; it is seems tedious to complete the task that they prepare but if the project is high in quality, then why not? The only problem is that it may not be possible for us to know it, or we are too lazy to investigate further, so we ended up ignoring it and move on to a much easier one.
How much worth coins is each user getting in the airdrop ?
You mean the number of coins? But, it should depend based on the number of tasks that you have completed. If you mean about the value of the coin, then it is seems it is not listed yet, so there might be no official value for now, and again, the total worth of the drop can depend only on your effort.