Please help! I download golf courses on my app and synch my watch but when I come to play the watch can't find the courses? It also mentions no available satellites. Have tried all trouble shooting. What do I need to do?

Connect your watch to a home computer and install course map updates using the Garmin Express program. 

Steps outlined on the support page in the link below: 

Update Golf Courses and Device Software on an Approach

In the Garmin Golf app, the download golf courses section does not install course mapping to watches with preloading worldwide golf course mapping. The updates have to be installed through Garmin Express.