Filter unique values in a column and sum data in another column

Question

I have a table full of data. What I need to do is the following:

1. Filter and copy all unique values in one specific column from one sheet (s1) to another(s2). (I have done this)

2. Filter each unique value and sum up corresponding data in another column.

3. Filter each unique value and sum the products of data in two corresponding columns(col2 and col3).

I am able to only do the following uptil now:

Sub CopyUnique()
    Dim s1 As Worksheet, s2 As Worksheet
    Dim tempLast As Long
    Dim lr As Long
    
    
    Set s1 = Sheets("Bericht1")
    Set s2 = Sheets("Sheet1")
    s1.Range("E:E").Copy s2.Range("c1")
    s2.Range("A:A").RemoveDuplicates Columns:=1, Header:=xlNo
    
    tempLast = s2.Cells(Rows.Count, "A").End(xlUp).Row
    
End Sub

The following is a sample of the data I have in the first sheet (s1):

Account	Col2	Col3
A	2	4
A	3	5
B	2	6
B	3	4
B	2	2
C	3	3
C	2	4

Any help would be appreciated!