Hey!

The theme of the jam will be announced in a livestream on the 5th of May UTC0.

More information about that stream will be posted soon

1st who I know the theam of the jam, which YouTube channel comes live on 5th may

While there will probably be an official link at some point before the start, past editions' theme reveal was streamed on Adrian's channel, so it's a good bet that this year's will be too

https://www.youtube.com/@RedefineGamedev/streams

2nd one I make a proper app game Or upload the game on waebsites help me

You make your Godot game, and then you export it for HTML5 and upload it to Itch.io. You can find some tutorials on how to do so in Youtube, both for Godot 3:

And for Godot 4: