Windows cmd (or curl in windows don’t know really) doesn’t like single quotes so it should be
curl -s http://localhost:8989/api/series -H "X-Api-Key: 6e7bff2e25e24317924907b16e6b7eee" --compressed | jq -rs ".[]| .[] | select(.title==\"Fargo\") | .id "
Using a variable in windows is like
SET seriesName=Fargo
Calling it then in jq should be
curl -s http://localhost:8989/api/series -H "X-Api-Key: 6e7bff2e25e24317924907b16e6b7eee" --compressed | jq -rs --arg seriesTitle %seriesName% ".[]| .[]| select(.title==$seriesTitle) | .id"