If recurring, just list the monthly amount (I'll assume you'll be continuing the donation through the end of 2020). If one-time, list the total amount.
Your answer
Would you like to be shouted out in the next 10 Months to 10% blog post and/or social media?
Note that the more names and donations we can show, the more we can convince those on the fence to join the project, especially if they happen to know you!