Sun got shine,
This first half of the line sets up for the next part. It can mean literally the sun is shining, but can also mean “son got shine” as in Joey’s on his game right now and/or he’s flashy.
Shine is a term for fame, as in shining lights etc.
So he’s using wordplay to describe his recent rise in fame as a future star in the music industry, just as the sun is a star.
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