1- Read and review the smart contract audit for the token.
2- Verify that the company exists and has a registered address.
3- Check to see if the management and individuals involved are genuine and exist. For example, you can check to see if the team is on LinkedIn and Twitter, as well as if the names match.
4- If a new coin's earnings appear suspiciously high and the coin does not turn out to be a rug pull, it is most likely a Ponzi scheme.
Learn More:
https://mycryptoparadise.com/what-are-rug-pulls/