Script Time Exceeded in Google App Script - google-apps-script

Question

This is the first time I am programming using Google Script and I cannot figure out how to add a function to circumvent Google's error message of exceeding processing time. Could you please help?
The program gets the number of bars and pints ordered and references them into a different sheet which has a calculator to calculate costs and outputs the value. Would really appreciate the help
/**
*
*
*/
function STBIBOL()
{
var r = 6
var destclm = 11
var pintsclm = 105
var barsclm = 101
var spreadsheet_url = 'https://docs.google.com/spreadsheets/d/1cqgdo_pgJ4n0xhXqMah24g6jjv7sfl2o92k1pwXNUuo/edit#gid=532254312';
var sheet_name = 'BOLs Entered for Fulfillment';
var sheet_name1 = 'STBI Calculator';
var ss = SpreadsheetApp.openByUrl(spreadsheet_url);
var sheet = ss.getSheetByName(sheet_name);
var sheet1 = ss.getSheetByName(sheet_name1);
var lastRow = sheet.getLastRow();
for(i =1; i< 20; i++)
{
var rangeD = sheet.getRange(r,destclm)
var dest = rangeD.getValue()
var rangeS = sheet.getRange(r,pintsclm)
var pints = rangeS.getValue()
var rangeB = sheet.getRange(r, barsclm)
var bars = rangeB.getValue()
var range = sheet1.getRange(14,3)
range.setValue(dest)
var range2 = sheet1.getRange(11, 3)
range2.setValue(pints)
var range3 = sheet1.getRange(12, 3)
range3.setValue(bars)
var rangev = sheet1.getRange(8,3)
var value = rangev.getValue()
var range4 = sheet.getRange(r,110)
range4.setValue(value)
r = r + 1
}
}

Answer 1

Instead of making multiple calls to GAS services on each run of the loop, which causes the execution to fail, you could simply get the entire range in one call like this:
var range1 = sheet1.getRange(startRow, startColumn, numberOfRows, numberOfColumns);
If the range in the 2nd sheet has the same dimensions (same number of rows and columns) as the 1st sheet, you could simply 1) get the values from the original sheet as a 2d array
var values1 = range.getValues();
2) Write values to the 2nd sheet
var range2 = sheet2.getRange(startRow, startColumn, numberOfRows, numberOfColumns);
range2.setValues(values1);