This strongly depends on the payment type for the offer you selected and on the performance of your channel. To give you an indication of how much you can earn with performance offers we developed a prediction tool that calculates and earnings estimation based on how many viewers you reach per video, how others performed and how high the payout is for that specific offer. The tool is automatically enabled when you connect your channel in your profile page. The predictions will appear on the offer cards shortly after you connected your channel.
Please keep in mind that the prediction tool should just serve as an indication. We always recommend that you select the games that seem the most fun for you instead of the best paying offers. We found that channels that carefully selected the games based on their own interest performed considerably better when featuring the game on YouTube.