Github desktop possibly not syncing?

I have created a new project in vs code and basically finished. i have like 95% finished it only done in html and css but I have a lot of small things to complete and I just realized I didnt use github at all, so im wanting to use it to store everything i currently have finished and all changes to come.
My problem is I can not figure out how to get my current vs code work into github desktop so i can push it up to github. mybe its called syncing idk…any help would be appreciated