You could say "I want to develop these photos" or "I'd like to develop these photos", not "I'd like develop these photos".

All of them are wrong. I'd like to have these photos developed. You're not developing them yourself, are you?

Randy is correct. Michael's answer is a little bit less politeness. Apart from what you said, alternatively. you can say: Could you help me to develop these photos please?

I want to develop these photos.