How can i confirm whether my game has been uploaded on the game jam or not as it is still showing the 'Submit the Project ' button even after submitting?

you have to make your game visibility from draft to public

On the game's page there will be a link to the submissions page for the game.

Thank you dovjay and heckert for your help!!

Also, it looks like anyone who has already submitted gets that nice little "Submitted" tag next to their name on each post here, so looks like you're good!