If were talking about signature campaign, of course it's depends on your rank and the amount of token equivalent to bitcoin (if were talking about altcoin campaign) that we have been join. But the highest amount that I've been earned is about 0.05BTC and that's is my first income. It's quiet small compared to others but I'm happy with it. It motivates me to continue what I'm doing here and start to learn about others stuff that helps me to increase my income.