The 2023 release of the Global Heat Flow Database (https://doi.org/10.5880/fidgeo.2023.008) contains about 73,033 data points from 1,414 publications.
The IHFC hosts a web-based viewer of heat flow data. Visualization of the heat flow data is also available in KMZ and SHP file formats.
Screenshot of Global Heat Flow data in the region of North Holland, Netherlands (source: IHFC)