How do you add cms to a wall?

What do you mean exactly? What do you want to add? Height? Thickness? What? Your screen shot doesn’t tell us what you are trying to accomplish.

I want to add height to the lower wall and if I do it how I did the top increase at 26º not at 90º

I want to add height to this walls

Select the top face of the wall and use Move to move it straight up.

I did that always but this time didnt increase in 90º angle, finally I added “height” from bottom to underground and move all the sketch to 0x0y0z. Thanks.