Need Help on Data Transformation

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8kvMTVUwVNJRciwpSc1LScxLTgVyDA0MdAwMVIGswNLEnMySSiDLwhQq5JiSkVqUClFoBlEXqwM1yQjdJFOYQQFF+SmlySWZZRDTYMLBPo5A0hxidmwsAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Name = _t, #"1.1" = _t, #"1.1 Score" = _t, #"1.2" = _t, #"1.2 Score" = _t, #"2.2" = _t, #"2.2 Score" = _t]),
    #"Unpivoted Columns" = Table.UnpivotOtherColumns(Source, {"Name"}, "Context", "Value"),
    #"Added Custom" = Table.AddColumn(#"Unpivoted Columns", "Type", each if Text.Contains([Context],"Score") then "Score" else "Attribute"),
    #"Pivoted Column" = Table.Pivot(#"Added Custom", List.Distinct(#"Added Custom"[Type]), "Type", "Value"),
    #"Extracted Text Before Delimiter" = Table.TransformColumns(#"Pivoted Column", {{"Context", each Text.BeforeDelimiter(_, " "), type text}}),
    #"Grouped Rows" = Table.Group(#"Extracted Text Before Delimiter", {"Name", "Context"}, {{"Attribute", each List.Max([Attribute]), type nullable text}, {"Score", each List.Max([Score]), type nullable number}})
in
    #"Grouped Rows"

Before:

After: