Вы можете сделать это следующим образом.Я взял все даты, но включил только одну дату, которая будет использоваться вместе со всеми валютами.Добавьте еще один внешний цикл над датами для добавления в значения дат, т. Е. Используйте внешнюю петлю над коллекцией inputDates для получения каждой даты.
Option Explicit
Public Sub GetData()
Dim body As String, html As HTMLDocument, http As Object, i As Long
Dim codes As Object, inputCurrency As Object, inputDates As Object, dates As Object
Const BASE_URL As String = "http://www.bcra.gov.ar/PublicacionesEstadisticas/Evolucion_moneda_3.asp?tipo=E&"
Set codes = CreateObject("scripting.dictionary")
Set inputDates = New Collection
Set html = New HTMLDocument '<== VBE > Tools > References > Microsoft HTML Object library
Set http = CreateObject("MSXML2.XMLHTTP")
With http
.Open "GET", "http://www.bcra.gov.ar/PublicacionesEstadisticas/Evolucion_moneda.asp", False
.send
html.body.innerHTML = .responseText
Set inputCurrency = html.querySelectorAll("[name=Moneda] option[value]")
Set dates = html.querySelectorAll("[name=Fecha] option[value]")
For i = 0 To inputCurrency.Length - 1
codes(inputCurrency.item(i).innerText) = inputCurrency.item(i).Value
Next
For i = 0 To dates.Length - 1
inputDates.Add dates.item(i).Value
Next
Dim fecha As String, moneda As String, key As Variant, downloadURL As String
Dim clipboard As Object, ws As Worksheet
Set clipboard = GetObject("New:{1C3B4210-F441-11CE-B9EA-00AA006B1A69}")
For Each key In codes.keys
DoEvents
fecha = inputDates.item(1) '<== use an outer loop over inputDates collection to get each date
moneda = key
downloadURL = BASE_URL & "Fecha=" & fecha & "&Moneda=" & moneda '2019.02.11 ,79
.Open "GET", downloadURL, False
.send
html.body.innerHTML = StrConv(http.responseBody, vbUnicode)
clipboard.SetText html.querySelector("table").outerHTML
clipboard.PutInClipboard
Set ws = ThisWorkbook.Worksheets.Add
ws.NAME = fecha & "_" & moneda
ws.Cells(1, 1).PasteSpecial
Next
End With
End Sub