example of getrange google script
Example 1: getranges google script
let SS = APP.getActiveSpreadsheet();
let sheetIndex0 = SS.getSheets()[0];
sheetIndex0.getRangeList(['A1', 'B1:C7']).setHorizontalAlignment("center");
Example 2: google apps scipt getRange
getRange(row, column, numRows, numColumns)