Got a shape from 20+ curves and i want to create a surface. Is there an option?
It depends on the curves.
There is no command in Rhino called SurfaceFromJumbleOfCurves.
Each surfacing command has specific requirements for the input curves. Great care needs to be taken when crafting the curves to get excellent surfaces from them. The Help articles for each surface creation command are a good place to learn about the input requirements to get good results.