The belt is more like a chain. It has links but instead of sprocket teeth, there is a variable pitch pulley and friction is used between the pulley and links to transmit power.
Replacing the belt requires removing and tearing down the trans at a cost of thousands of dollars for a rebuild.
The most you can do is change the fluid (around 4 qts), more frequently than recommended by the maintenance minder. This usually means 25-35Kmiles instead of 35-45K. Fluid runs around $15 per quart. I would not use anything but Honda OEM CVT fluid for your generation of trans (HCF-2) despite what anyone tells you. I would also have the local dealer do the work in case the trans fails. My friendly local reputable independent shop will not do any CVT fluid changes any longer because of failures.