Research Study of a New Medicine (NNC9204-1706) in People With Overweight or Obesity

The study is testing a new medicine for weight control in people with overweight or obesity. The aim of the study is to find out how safe the study medicine is and how it works in the body. Participants will either get NNC9204-1706 (the new study medicine) or placebo (a dummy medicine) - which treatment participants get is decided by chance. NNC9204-1706 is a new medicine which cannot be prescribed by doctors. Participants will get an injection under the skin of participants' stomach each morning for 10 weeks. A medical tool called NovoPen®4 will be used for the injection. Participants must change the part of the pen including the medicine (the cartridge) each day. The study will last for about 16 weeks. Participants will have at least 17 clinic visits and 10 phone calls with the study doctor. At certain times during the study, participants will have blood drawn and 3 different kinds of heart tests (electrocardiograms). Study doctor will ask participants to answer mental health surveys.