I had already asked a question about how to make a debillarded stringer and I thank the people who made this slime for me.
Now I would like to side on the drawing the different angles indicated in blue color and be able to save the file in dxf to be able to open it on autocad
the problem is that the part doesn't have a straight element so it's impossible for SW to dimension an angle. Your SLDDRW file is unusable without the associated SLDPRT file. Depending on how you have modeled your part, it is possible to show the sketches and/or dimensions of the model in the drawing.
The left shape of the stringer is based on a 3D spline. Under these conditions, it is difficult to claim to quote them in a drawing. You will have to rely on the good understanding and know-how of your manufacturer... On the other hand, some general dimensions of size, angle of ascent or section of the stringer can be dimensioned by relying on sketch entities made visible, as indicated by @stefbeno, or drawn directly in the drawing (points, construction lines, etc.).
By adding one or more 3D spline waypoints in your sketch, it is possible to dimension their positions, and retrieve them from the dxf in Autocad. To export to dxf, simply select Save As... and choose the dxf format from the list of file types.