Those orange and clear covers generally have little tabs on them that slide into slots on the housing. On the picture of the orange one, I can see one on the bottom center of the lens.
Often just pushing upward from the bottom of the lens will allow the bottom tab to slide out of it's slot and then you can pull the lens down so the tabs at the top come out of theirs.
If that doesn't work, a small straight edge (small screwdriver, pocket knife, etc.) slid in next to the tab on the bottom and a little pressure upward that way will do the trick.
I will say be gentle, I have cracked one before.
2020 Chevrolet 2500 LTZ, 2019 Forest River Wolfpack 23Pack15, 2014 EZGO Golf Cart.