Can tell much from the photo on what condition your chain and sprockets are.
If you're developing a tight spot in the chain, or the chain is requiring frequent adjustments, then it may be time to replace the set.
Also if your sprocket teeth are showing undercutting by the chain in sort of hooked shape, then it's time.
For the most part, it's the chain that wears out the sprockets.
As the bushings in the chain rollers wear, the roller's center to center distance increases, and that puts more pressure on the sides of the sprocket teeth and starts the wear process.
That's why both chain and sprockets must be replaced as a set.
By the look of the photo, it appears your may running a Vortex sprocket.
Vortex often has the sprocket type and tooth number near the sprocket hub or spoke.