Thank you for the interest in NodeXL!
NodeXL can calculate Edge Weights (see: NodeXL>Data>Prepare Data>Count and Merge Duplicate Edges) or use an existing column of numeric data in the Edges worksheet as a weight.
When NodeXL graph metrics are run, NodeXL can calculate in-degree and out-degree and insert these values into the Vertices worksheet.
It sounds like you want a weighted in- or out- degree metric. This could be created with a
formula in the Vertices worksheet.
This formula can add up the weights for every edge that originated (Vertex1) or terminated (Vertex2) with the target vertex.