Doing airdrop on telegram mostly will become a penny of worth's. My only success with airdrop is with Supra. I got $600 worth of token but it staked for 15months. Well free money..
I have seen very little success with Airdrops. In the past, I used to work on airdrops, but I did not get any success in return. That is why I retired from there, to increase the publicity of the project and to increase the holding or holder in general, I promote it in the locality.
I rarely hear about Airdrops being successful, but currently Telegram Tap Tap has become very popular. I have received a small payment from here.