It's not a scam, Hydrogen has a working platform that devs use. If you are at minimum a junior developer, you can check it out yourself.
The market is going sideways, while large cap coins are generally holding prices, smaller projects will suffer.
The exuberant run up from last month was always going to be met with a considerable correction.
Hold tight, think of the future, not the present.

Edit: I was responding to the text "This is scam or not ? I already invested", in which I still believe HYDRO is not a scam.
Unfortunately I did not check the linked spreadsheet and was unaware it was for a scam airdrop, apologies to anyone effected.