A little late for that. OP stated that they already allowed their chameleons to mate.
What you really need to prepare for is how you're going to feed the probably dozens of babies. You will need feeders on the order of thousands. If you assume each cham eats ~10 insects a day, you could easily end up needing 300+ feeders every single day, so I hope you're prepared and have a plan to accomplish that.
The other thing will be, what are you going to do with the offspring? How are you going to find people to sell them to? The world has no shortage of veileds whatsoever and so there is very little demand for single person breeding projects (especially when, unlike the many many established veiled breeders out there, you have no reputation as a competent keeper let alone breeder in the public eye). What will you do if you can't sell them? You need to be prepared and knowledgable starting yesterday. Breeding is not to be taken lightly. It is very hard on the female's body and very expensive. In the beginning, they won't take up all that much space, but they will grow fast and eventually need to be separated from each other. So you will need space, equipment, supplements, caging, lighting, etc etc.
You will be putting a heck of a lot more money into doing this than you will make from selling them. In addition you need to know exactly how to incubate chameleon eggs. Do you know how to set up a proper laybin for your female? Do you know how long incubation takes? Since they have seemingly already mated, you will quickly run out of time before you need to know all of this and much more, so I suggest getting to researching everything you possibly can immediately.