Map 3D array to cells in Google Sheet – Apps Scirpt

Hey I am trying to place arrays of data into a Google Sheet. I’ve got a list of dimensions which I am mapping through a function calling an external API to get numerical values for each dimension. I then want to input these into my spreadsheet – however I am unsure how to do this. I would also like to input the specific Date into a collumn as well. So ideal output would be column A = date, column B = dimensions, column C = numerical value.

function function() {
  var dimensions = ["CN","IN","NZ","US","UK","MY","SG","JP","KR","DE"];
  var counts = dimensions.map(dim => [getValue(dim)]);
}

function getValue(dim) {
  // ive removed the detail for the API call
  var response = UrlFetchApp.fetch(fetchUrl, params);
  var json = JSON.parse(response.getContentText());
  var dataSet = json.results;

  Logger.log(dataSet);

  return dataSet;

}