Can't get expected readings using PulseIn command

OK, maybe I'm even more lost than I thought. I don't see any toolbar from which to do a format before posting; I'm in the web Editor and I don't see any way of going "up" to the higher-level IDE? I think I am misunderstanding this whole software thing. I thought I had installed the web-based Create but where I am editing code is Arduino Cloud. I had downloaded and run the ArduinoCreateAgent installer. How do I get to the IDE screen? Sorry for being so appallingly dense.....