You can find our Uptime SLA here: https://strapi.io/cloud-legal however please note that depending on our license level and agreement; your terms may be slightly different.
We encourage you to reach out to our team by opening a ticket so that we can pull up your existing contract and forward it to you. If you have any specific questions on your terms please do let us know.
If you are not a current customer and would like more information, we encourage you to contact our sales team: https://strapi.io/contact