Since you didn't post the html resource, so, we don't know which HTML element are you using, I suggest you could refer to the following general method to copy and set the value.
Generally, we could use the getElementById(), getElementsByClassName(), getElementsByName(), getElementsByTagName(), querySelector() and querySelectorAll() to find the web page elements first, then, using the innerText or innerHtml property to set the value.
From the screenshot, it seems that you are creating a schedule, so, I suppose it is an html table elements, and you want to copy values from one row to target row (which might be using input text or not), please refer to the following sample code:
The web page resource:
<table >
<tr>
<td>11 MON</td>
<td>12 TUE</td>
<td>13 WED</td>
<td>14 THU</td>
<td>15 FRI</td>
<td>16 SAT</td>
<td>17 SUN</td>
</tr>
<tr>
<td id="label2_1" class="class2_1"><input type="text" value="" /></td>
<td id="label2_2" class="class2_2"><input type="text" value="" /></td>
<td id="label2_3" name="wedtime2_3"><input type="text" value="" /></td>
<td id="label2_4"></td>
<td id="label2_5" class="class2_5"></td>
<td id="label2_6" name="wedtime"></td>
<td><input id="txt7" type="text" value="" /></td>
</tr>
<tr>
<td id="label3_1">08:28</td>
<td id="label3_2" class="class3_2">02:46</td>
<td id="label3_3" name="wedtime3_3">03:46</td>
<td id="label3_4">04:46</td>
<td id="label3_5" class="class3_5">05:46</td>
<td id="label3_6" name="wedtime">06:46</td>
<td>07:46</td>
</tr>
</table>
Then, using the following VBA script to copy data:
Sub Test()
Dim IE As Object
Dim startDateText As Object, endDateText As Object
Set IE = CreateObject("InternetExplorer.Application")
With IE
.Visible = True
.Navigate "<web page url>"
While IE.ReadyState <> 4
DoEvents
Wend
'using getElementById() method to get the td tag, then using getElementsByTagName() method to get the input text box.
'using the innertext property to set the input text box value, using the innerHtml property to get the value.
IE.Document.getElementById("label2_1").getElementsByTagName("input")(0).innerText = IE.Document.getElementById("label3_1").innerHtml
'using getElementsByClassName method to get the elements.
IE.Document.getElementsByClassName("class2_2")(0).getElementsByTagName("input")(0).innerText = IE.Document.getElementsByClassName("class3_2")(0).innerHtml
'using getElementsByName method to get the elements.
IE.Document.getElementsByName("wedtime2_3")(0).getElementsByTagName("input")(0).innerText = IE.Document.getElementsByName("wedtime3_3")(0).innerHtml
'Using innerHtml property to set the value.
'using getElementsByClassName method to get the elements.
IE.Document.getElementById("label2_4").innerHtml = IE.Document.getElementById("label3_4").innerHtml
'using getElementsByClassName method to get the elements.
IE.Document.getElementsByClassName("class2_5")(0).innerHtml = IE.Document.getElementsByClassName("class3_5")(0).innerHtml
'using getElementsByName method to get the elements.
IE.Document.getElementsByName("wedtime")(0).innerHtml = IE.Document.getElementsByName("wedtime")(1).innerHtml
End With
Set IE = Nothing
End Sub
Besides, you could also use the following script to loop through the td
tag and set the value
'find all of the tr.
Dim TableRows As Object
Set TableRows = IE.Document.getElementsByTagName("table")(0).getElementsByTagName("tr")
'Debug.Print TableRows.Length
Dim targetrow As Object
Dim datarow As Object
Set targetrow = TableRows(1).getElementsByTagName("td")
Set datarow = TableRows(2).getElementsByTagName("td")
Dim i As Integer
Dim text As Object
'loop through the td and set value.
For i = 0 To targetrow.Length - 1
Set text = targetrow(i).getElementsByTagName("input")(0)
If Not text Is Nothing Then
text.innerText = datarow(i).innerHtml
Else
targetrow(i).innerHtml = datarow(i).innerHtml
End If
Next i
The result as below:

More detail information about using these methods, please refer the common VBA method or properties.
If still not solve your problem, please post the related web page html resource, it is better for us to know which HTML elements are you using and help you solve the problem.