"进出口货物金额" can be translated into English as "the value of imported and exported goods" or "the amount of import and export transactions".
"The value of imported and exported goods" emphasizes the monetary worth of the goods being traded across borders.
"The amount of import and export transactions" focuses more on the financial volume or the total monetary value involved in these trading activities.
Both expressions are accurate and can be used depending on the context and the specific aspect of the trade that one wishes to highlight.