Update data from a Spreadsheet - App Script

I am doing a data transfer of several spreadsheets to a single one, what I do is transfer the last data of certain columns to the master spreadsheet and also insert them in the last available row of certain columns, for now, I insert all the data but I would like to know how I can make it examine the master spreadsheet so that if those data already exist do not delete them but update it. The script that I have is the following ...

      function  Gas10(){  
      var ss1 = SpreadsheetApp.openById("ID"); 
      var ssh1 = ss1.getSheetByName("Hoja 1");


    var lastRow1 = ssh1.getLastRow();
    var gtRange1 = ssh1.getRange("C"+(lastRow1)+":K"+(lastRow1)).getValues();
    var gtRange2= ssh1.getRange("A" + (lastRow1)).getValue();

    var ss2 = SpreadsheetApp.getActiveSpreadsheet();

    var ssh2 = ss.getSheetByName("Hoja 2");
    var lastRow2 = ssh2.getLastRow() + 1;
    var setRange1 = ssh2.getRange(lastRow2, 4, gtRange1.length, gtRange1[0].length).setValues(gtRange1);
    var setRange2 = ssh2.getRange(lastRow2, 3).setValue(gtRange2);            

}

As I repeat, I need to know how I can do it when I insert a piece of information (I already do that), but update it if it already exists. This question was posted again but on the server in English. StackOverflow .

Edit

This is a sample that you make so that the question could be better understood, in which I have 2 sheets and from sheet 1 I copy the last data of a certain range and I paste them in sheet 2 in the last available row and what I try to do is that if the Name, Num and Project are already in the Sheet 2, update the ID. In the example you will understand it better.