So the job is just to donate? then the reward is their token. What if someone makes a larger donation, is the reward commensurate with what they spend? This is a rare and strange method and you need to be careful because you have to spend money to get rewards
Yes, your job is to donate 1 USD, as I said it's speculation they may reward donators with their token or they may not, please bear in mind while donating that your donation could go in vain and you may get nothing.
Very often, such donations were considered as an additional criterion for airdrop. And accordingly, such a wallet received a larger number of free coins than those that did not produce a donation. But I don't think that a donation of $1 will be enough to receive an airdrop without completing any other tasks. Nevertheless, the Time swap team has already managed to raise half a million dollars in donations, among which there is my 1 Matic)