Need advice!!

Hello! I have a veiled chameleon named Leopold and I need to take him to the vet, he had pus growing in his eyes :( But that’s not the advice I’m looking for, he does NOT like people. And I’m not sure how I’m going to get him to the vet. The person who worked at the store I got him from basically manhandled him and now he’s traumatized I need all the advice I can get on how to transport him to the vet