Yes, it's a very complicated sentence. A metaphor is a sentence we use to explain or to describe something, often indirectly. For example, if I say "I am going to shake the dew of the lily" is an expression from Texas that a lady uses when she says she wants to go to the bathroom. To "dust off" means to freshen or to refresh. A metaphorical "ladder" is something we use to reach up and get something. So by saying "it's time to dust off our metaphorical ladders and reach for the fruit of our labor", the writer is suggesting that it is time for women to take advantage of the results of their work, and enjoy it. But actually, the paragraph isn't written very well.

"Ladders" are implements for climbing; "metaphorical" is something said 'beating around the bush'; and "dust off" is to clean something in order to put it to work. So I think someone is saying that they (we) should shake the dust from anything they (we) may use to reach others heights -- something they (we) aren't doing yet.