As you may know, you can use Vina Wizard > Analyze Results page to load multiple Vina outputs (*_out.pdbqt). For AutoDock, if you have already gone through the wizard, produced dlg (docking log) files and want to load them again, you can go through the wizard again to load them. PyRx won't run AutoDock and will load the results instead, if all dlg files are in their places. PyRx stores dlg files in subfolders and since a file browser won't let you select multiple files from different folders, it's not currently possible to load dlg files using a file browser.

I've created a new script to enable this. Download load_dlgs.py and use PyRx > File > Run Python Script or click on Python icon on the toolbar on upper left to open this file. It opens Choose Docking Log Files dialog where you can select multiple dlg files. Please note that some of the PyRx functions, such as recently introduced Show Interactions, won't work and will through error messages if you load dlg files this way.