How can I use this api

I am using WordPress + totalContest in my backend.
I got this API from my total contest Plugin. can anyone help to use this API?

Get submissions :

Upload a submission :

Get submission object

Cast vote

Please help me to find a way to use this API?

use the web component

you can find some guides in the #guides section

also this example might help App Inventor Tutorials and Examples: Dropbox | Pura Vida Apps
and you can find much more after doing a search here in the community…
what about trying something and if you got stuck, post a screenshot of your relevant blocks?