I have a Garmin S40 for golf. My question is why doesn't show GOLD for a Tee Box?

This forum is for software developers using the FIT SDK so you probably will not get a response from the community members.

There is a forum for the Garmin S40, where someone may be able to answer your question.
https://forums.garmin.com/outdoor-recreation/golf/f/approach-s40

There might be an answer in the S40 online help center.
https://support.garmin.com/en-US/?productID=635923&tab=topics

Or you may want to contact the Garmin Support Team directly.
https://support.garmin.com/en-US/ql/?focus=topics