How Do I Have To Upload The Previous Downloaded Game Build In Construct To Make Some Changes

I have to do some changes to my downloaded game which is developed in Construct. I have to upload the game in a new construct account to do those changes how can I do that anyone can help me out with this problem the game is developed with a personal license so can I use the same license for that work?

Just drag and drop the project file into Construct.

Or if it's a project folder, import it using the Construct menu.

You don't even need a license to open it. A project is not bound to any Construct license.

Keep in mind that you will need the project file/folder, not an exported game.