VlookUP

Hello guys, I'm new on here but I've read great things about this forum. I would like to see if you guys could help me out. I am trying to come up with a formula (vlookup) that will look up a upc and that every upc it finds that matches,(this is where I get lost) it should add up the unit sales and dollar sales and give me a final amount. I hope you all understand what I'm trying to say, I've been at it all day and can't seem to figure it out. Thank you in advance!

Also, I can't seem to find a way to add on the spreadsheet so everyone can see what I'm working with, if you know how, please tell me.

In the end, I would like to have the totals of the 52 week and 4 week dollar sales and units sales but under 1 upc, as you can see in the workbook, there is a upc for 4 week and 52 week, so I need a formula that will find any duplicate upc's and at the same time add the dollars and units to be able to just have 1 upc/product/dollars/units and the last two taps I would just have 52 week and 4 week, please let me know if you guys understand this, I get lost my self sometimes lol