Well its not really that complicated. Let me lay it to you as simple as possible.
Example below.

Bounty token allocation $450,000 distribution
Twitter 10%
Facebook 10%
Telegram 10%
Translation 20%
Blogs 10%
Youtube 10%
Signature 30%
So $45,000 x 30% = $135,000 that is the amount allocated for signature
To know how much you earned, check the spreadsheet. For example,
Total stakes for all participants = 500
Your total stakes is 5 so below is how you compute
$135,000/500 x 5 = $1350 (the total amount you receive for the bounty)