Hi,
This is kinda a stupid question but I want to know how to upload my latest code if I want to use the same site?
Hi, @Alchemist21, and welcome to our community site. There are no stupid questions! 
Deploys are Netlify are immutable. You cannot change an existing deploy. To deploy a new version of a Netlify site, the entire site is uploaded again.
This can be done by triggering a new Git backed deploy, by using the “Drag and Drop” method, or using Netlify CLI to upload the new version.
If there are other questions about this, please let us know.