Explanation

Box 1: FLOAT
Identify which customers should receive promotional emails based on their likelihood of purchasing promoted products.
FLOT is used in the last statement of the code: WITH (score FLOAT) as p; From syntax: MODEL The MODEL parameter is used to specify the model used for scoring or prediction. The model is specified as a variable or a literal or a scalar expression.
Box 2: dbo.CustomerWithProductScore
Identify which customers should receive promotional emails based on their likelihood of purchasing promoted products.
Only table CustomerWithProductScore has the required filed score.
From the syntax:
DATA
The DATA parameter is used to specify the data used for scoring or prediction. Data is specified in the form of a table source in the query. Table source can be a table, table alias, CTE alias, view, or table-valued function.
Reference: https://docs.microsoft.com/en-us/sql/t-sql/queries/predict-transact-sql