It is known that the corporate world is highly volatile and susceptible to transformations. Therefore, managers are expected to have increasingly rich and timely information and data to make decisions. However, what happens is that usually, managers consider only the situation or scenario in which the decision is made. In this sense, the present study seeks to structure three future scenarios to help managers of a Junior Enterprise (JE) to compose its portfolio of projects. The Momentum method was used to prospect scenarios in the JE in question so that the results help it in the challenge of effectively dealing with the uncertainties about the coming years. From the data collected, three possible future scenarios were created, which can support the problem of project portfolio selection and help the company's decision-makers to prepare for the worst scenario and maximize the use of the best of the structured scenarios.