For this text, you should get the OCR endorsed commentary. It is published by bloomsbury:

www.bloomsbury.com/uk/virgil-aeneid-xii-a-selection-9781350059221/#:~:text=Aeneid%20XII%20is%20the%20final,reaches%20a%20bloody%2C%20moving%20climax.

You will also find it useful to have more than one copy of the Latin text to write on. Should you need another copy, here is the file: