Converting a $20 PlayStation gift card to cash is not a straightforward process and often comes with risks.

Firstly, it's important to note that many official platforms do not support such conversions. PlayStation gift cards are designed for use within the PlayStation ecosystem to purchase games, add-ons, and other digital content. Trying to convert them through unauthorized means can violate the terms of service and may lead to account restrictions or legal issues.
Secondly, there are numerous third-party websites and individuals claiming to offer this service. However, these are often unreliable and may be scams. They could steal your gift card information or simply disappear after taking your money. It's crucial to avoid dealing with such unregulated sources.
In conclusion, it's generally not advisable to attempt to convert a $20 PlayStation gift card to cash. Stick to using the gift card for its intended purpose within the PlayStation network to ensure a safe and legitimate gaming experience.