To dream that you are wearing sunglasses, indicates your poor perception of some issue. You tend to see the dark or negative side of things. Perhaps you don*t want to see or be seen.
Consider the context and how you feel about the sunglasses. Some possible meanings include:
An attempt to project a certain image
"Shading" or protecting yourself—for example, from people around you or from facing reality
Trying to control or affect your perception of situations, events, or people in an unnatural or skewed way (other than reality)
Distancing yourself from people, relationships, or social interactions
Feeling private, or like you want to hide yourself or your feelings, or like you don't want to be bothered by others
Feeling insecure