When exporting data to a CSV from the table widget in experience builder, X and Y columns are added but the coordinates look to be nonsense. What coordinate system is this? It doesn't look to be standard WGS84 or Web Mercator. The actual location of the points is in the UK and they display in the correct location both on the experience builder webmap, and when I bring the layer into ArcPro.
The units are based on the coordinate system of the basemap. There are many different national/regional coordinate systems in the world that are more accurate than the global systems for the regions they were made for. Based on the size of the numbers, that looks like UTM. You will need to find your UTM zone to potentially make them meaningful.
