Consulta sobre filtrado de fechas

Hello, I am using as a condition dateFinal = Now.AddDays (-7) .ToString (“dd / MM / yyyy HH / mm / ss”) And status = “Closed (Successful)” + “Canceled” + “Done”, since I need to establish a data filtering for the dates that are included in a period of 7 days from today, please can you tell me how I can indicate the condition so that the 1 week interval is respected.