Converting a 20-dollar Google Play Store gift card to cash is an option that some people may consider. However, it's important to note that Google Play gift cards are intended for use within the Play Store ecosystem and not for direct conversion to cash through official channels.
Unofficial methods of converting gift cards to cash often come with risks. These may include dealing with untrustworthy individuals or platforms that could potentially scam you. There are websites and services that claim to offer such conversions, but they might not be legitimate. They could take your gift card information and not provide the promised cash, or they could even be involved in illegal activities.
In many cases, it's best to use the Google Play Store gift card for its intended purpose, such as purchasing apps, games, movies, or other digital content. This ensures a legitimate and safe experience within the Google Play ecosystem. If you no longer need the gift card or have received it accidentally, it might be a better idea to consider gifting it to someone who can make use of it rather than attempting an unregulated conversion to cash.