This article explains how to connect a Fitbit to Alexa using the Fitbit Alexa skill.
It doesn’t matter what kind of Fitbit you have. Whether you have a fitness band like the Fitbit Charge or a smartwatch like the Versa 2, Fitbit and Alexa work together in exactly the same way. All you have to do is enable the skill in the Alexa app. Here’s how:
In the Alexa app on your mobile device, tap More (the three horizontal lines).
Tap the search icon at the top of the screen.