Currently the Algolia Shopify app does not have native support for the Shopify "locales" feature. We recommend creating a different store for each locale.
However, there are still a few options even if a new store is not created. Support for multi-currency can be achieved using a workaround:
For multiple languages, the translations can be stored in Metafields and custom front end logic can be added to display the correct language for the customers locale: