You can find detailed instructions here and also, somewhat related from earlier today, here. Tropy’s project file is a SQLite database file, so you can open it in SQLite or many compatible database browsers. Please always be sure to keep backup copies if you inspect or modify your project this way!
When photos have been moved, the interesting table is the photos table, specifically the path column (you can try to select path from photos; to see all paths in your project). If paths of many photos change in a simple way (e.g., you move a folder in the path) it is normally very easy to update the paths with a single command as explained in the first link above. Happy to help out if you get stuck! (And again, please make a backup copy, then you’re safe if something goes wrong or if you break something for experiment’s sake!)