On July 25, Solo raised $1.2 million in investments. There is a waitlist form on the project website. You can fill it out and get access to future products.
Go to the website, click Join Waitlist, and fill out the form. Then wait for updates from the project team:

Participating in airdrops is your choice and your risk. We don't guarantee any rewards. Connect your wallet only to official websites. If someone asks you to send crypto – it's a scam.