There are two types of upload - Screen Shot and Gallery Picture uploads.
Screen Shot Upload
Go to the Map display.
To display pics, see Introduction for how to take pics with comments and tags.
Press the Share button (green share sign) to display the Share screen.
Select FaceBook and press Ok.
Follow the instructions and your screenshot of the map with your tagged picture will be uploaded to Facebook together with a link to Google Maps
Gallery Picture Upload
Press the Gallery button to display the Gallery for your StreetView.
Touch the picture you wish to upload and press Display.
Press the green Share button.
This will display the picture to be uploaded to FaceBook together with the latitude and longitude of where the picture was taken as part of a link to Google Maps(you can remove it if you wish). In this case -
Now you can type in a comment if you wish then press Send to upload your picture to FaceBook.
To display the place where this was taken, just click on the link to show it on Google Maps
Screen Shot Upload With Other
With Share -> Other
If you have the Facebook App installed on your phone then go to the Map display.
(To display pics, see Introduction for how to take pics with comments and tags)
Press the Share button (green share sign) to display the Share screen and select Other to display the list of Share Apps available on your phone.
If you have the Facebook App it will be displayed.
Follow the instructions and your screenshot of the map with your tagged picture will be uploaded to Facebook.