Web 3.0 is still in its early stage of development. There are numerous new Web3 projects with a large number of people who want to attract new contributors and users to their platforms by rewarding newcomers with free tokens. This is a fantastic opportunity for a newcomer. An airdrop occurs when a blockchain project distributes free tokens to the community.
This is typically done in order to promote and raise awareness about their project.
Airdrops are an excellent way to obtain free tokens that can be profitable if sold properly.

If you are looking to make money in different ways with web3 in future you can read Top 7 Ways to Generate a Huge Income Via Web 3.0 Applications.