I can see only Year of Fulfillment in your sheet -
I am guessing you do have individual Daily/Weekly Data.
Coming to your question -
What you are asking is to see weekly as well as monthly details. This different granularity(weekly and monthly) is not possible in same worksheet in Tableau.
This can be used by creating separate sheets for weekly and monthly numbers in a dashboard -
This is a workaround which I use for daily and weekly numbers.
Let me know if any clarification is required.
Your date field is cast as Year only. Your data doesn't contain anything that is equivalent to a 'week' level of detail in order to get week number or for that matter by month. You'll need to provide better date data at the level of at least the day of the transaction in order to populate week and/or subsequently month.