A utility A7Info displays the active focus point the camera used to acquire focus at time of shooting.
If you are using a Sony camera released prior to 2021 (A7RIv, A9II) then there is no method of reviewing where the focus point was when the shot was taken during post processing.
Note that only Sony ARW files are supported (not DNG).
.The application can be located at: https://soens.de/downloads.html.
For more current cameras release around 2021 sony displays the active focus points in Image Edge Edit application.