Hello @joanamnf,
Welcome to the Klaviyo Community!
Our Community Champion, @Omar and other Community members actually gave some great insight on this topic in the discussion below:
In essence, this really would depend entirely on how your site is set up. If you offered multiple country/language sites, then you’ll want to create separate Klaviyo accounts for each. Else there may be other methods to target your customers such as using location target or a custom trigger for a separate english language form you create. For more on these signup form settings, I would recommend checking out our How to choose form targeting and behavior settings Help Center article.
I hope this helps!
David