Autism warning.

Being 30 I have been on maybe 15 dates and killed the vibe on each one of them. Only one the girl was desperate too so we fucked. But this time it's a little different because I gave six girls my number on the train in the past weeks and yesterday this HB7 (8 with makeup) texted me back and we are going for a walk close to my place on the weekend. How do I score. I obviously suck at this. I can't escalate. I literally need to be told what to ask her to open the conversation. "Hi, how are you doing..." And then what?