The Live captions on the web will be rolling out to all Meet users including personal and work accounts today. However, a complete rollout might take two weeks time.
Users will be able to enable the language while turning on the feature during an ongoing Meet. If you are unaware of how to enable the feature, follow below steps.
During an ongoing meeting on Google Meet, tap on three-dots from bottom right corner, select Captions options. Choose the desired language and click Ok.