This is a stucco wall. The same material used on the house.

That would be an inexpensive cure! I thought about rocking my wall but there is so much if it. But i want to top smooth, it's around the pool and people sit on it

Capstone! A bit on the expensive side but you could have an Indiana Limestone cap cut to the curvature of the wall and secured in place. You'll want to consult with a designer / Landscape architect that has a good relationship with a local mason or stone supplier that can measure and cut to your specifications.

As a general contractor, I got that, but I hadn't thought of stucco. Lol thank you so much

Looks great! What are the dimensions of the retaining wall?

the wall looks great! could you tell me what vine you planted that appears to be creeping up the wall? thanks!