If you're using the default database with Resolve, see this
FAQ for the location. Otherwise, search in File Explorer for a folder called "Resolve Projects" to find your disk database path.
Please note that before starting on the insturctions below, ensure that your Resolve versions match - or your Desktop has a more recent version.
Copy the folder above "Resolve Projects" as a whole to the desktop (to let's say C:/Users/Jim/My Resolve DBs/).
Now the following path should be present:
C:/Users/Jim/My Resolve DBs/Resolve Disk Database/Resolve Projects/Users/guest/Projects/
In this computer, from the project manager, enable the left tab and select "New Database" (at the bottom).
The dialog shows options to connect or create - choose Connect.
Add a name - say "jim_laptop".
Add the path above "Resolve Projects" - here: C:/Users/Jim/My Resolve DBs/Resolve Disk Database/.
Click Connect.
You may be prompted to update the database - after which you should see your projects.