EstimatedPointNormals
EstimatedPointNormals[{p1,p2,...}] estimates normal vectors for the points p1, p2, ....
EstimatedPointNormals[mreg] estimates normal vectors for the vertices of the mesh region mreg.
Examples
pts = RandomPoint[Sphere[], 100];
EstimatedPointNormals[pts]Please visit the official Wolfram Language Reference for more details.