If you searched a bit you should have found something close. Its a task asked many times before, the simplest answer is to create a csv file that can be read into excel.
If you dump a pline using VL lisp you get the following properties which can be written to a file.
Select object: ; IAcadLWPolyline: AutoCAD Lightweight Polyline Interface
; Property values:
; Application (RO) = #<VLA-OBJECT IAcadApplication 00007ff6efad1e30>
; Area (RO) = 22851.0
; Closed = 0
; ConstantWidth = 0.0
; Coordinate = ...Indexed contents not shown...
; Coordinates = (438.274 377.093 350.597 263.545 487.373 208.873 ... )
; Document (RO) = #<VLA-OBJECT IAcadDocument 0000016800a9b248>
; Elevation = 0.0
; EntityTransparency = "ByLayer"
; Handle (RO) = "11C6A"
; HasExtensionDictionary (RO) = 0
; Hyperlinks (RO) = #<VLA-OBJECT IAcadHyperlinks 000001682be60ca8>
; Layer = "DEFAULT"
; Length (RO) = 471.499
; Linetype = "ByLayer"
; LinetypeGeneration = 0
; LinetypeScale = 1.0
; Lineweight = -1
; Material = "ByLayer"
; Normal = (0.0 0.0 1.0)
; ObjectID (RO) = 43
; ObjectName (RO) = "AcDbPolyline"
; OwnerID (RO) = 44
; PlotStyleName = "ByLayer"
; Thickness = 0.0
; TrueColor = #<VLA-OBJECT IAcadAcCmColor 000001682be60d00>
; Visible = -1
(setq obj (vlax-ename->vla-object (car (entsel "pick object "))))
(setq lay (vla-get-layer obj))
(setq hand (vla-get-handle obj))
