I can't think of any way to filter in the API call. The only way I can think to do this is to filter on the origin_country field in your client.

really? How could I do it?

Something like...

const COUNTRIES_IN_EUROPE_AND_AMERICA = ["US", "CA", "GB", "FR", "DE", "IT", "ES"]; // complete this list with country codes you want to filter on
results.filter(show =>
    show.origin_country.some(origin_country =>
        COUNTRIES_IN_EUROPE_AND_AMERICA.includes(origin_country)))

@ldjb and @jur98
I'm not a code programmer. But I must inform.
A new filter, &with_origin_country=, was added a few months ago.
It's not documented yet but I know it works for Movies.
And I think it should work for TV Show too.
What I don't know is if it accepts multiple countries simultaneously using pipe (OR).
In the test I did, it seems to work correctly.

http://www.shbhawani.com/3/discover/tv?api_key=THE_KEY&first_air_date_year=2020&page=1&with_origin_country=IN|BR

thank you soo much both to share this information.