Trustpilot is a valuable platform for building trust with potential customers.
There are more steps to gathering Trustpilot reviews than Google reviews, due to the verification process.
With this in mind, we'd recommend understand Trustpilots Automatic Feedback Service (AFS). https://support.trustpilot.com/hc/en-us/articles/213703667
The video below walks you through how to trigger a Trustpilot review using tags, to give you control over who receives these requests.