That one.
{{ $googleReviews := .Site.Params.widget.reviews.google }}
{{ $apikey := $googleReviews.api_key }}
{{ $place_id := $googleReviews.place_id }}
{{ $url := printf "https://maps.googleapis.com/maps/api/place/details/json placeid=%s&key=%s" $place_id $apikey }}
{{ $data := dict }}
{{ with resources.GetRemote $url }}
{{ with .Err }}
{{ errorf "%s" . }}
{{ else }}
{{ $data = . | transform.Unmarshal }}
{{ end }}
{{ else }}
{{ errorf "Unable to get remote resource %q" $url }}
{{ end }}
{{ with index $data "result" }}
{{ . }}
{{ end }}
The code above is verbose compared to your earlier code due to error checking, a key aspect of defensive coding.
I haven’t tested the above because I don’t know the values of:
$googleReviews
$apikey
$place_id
And this URL in your code doesn’t look right. It has a space:
https://maps.googleapis.com/maps/api/place/details/json placeid=%s&key=%s