Where these data block stored in STEP 7?

In TIA portal v13 where is in project file information about data block, function code block are stored ? Thanks

What "information" do you mean ?
If you mean properties of the blocks, right-click on a block in the project tree, and then select "properties" in the pop-up menu that appears.
If you mean size of code and data memory, then highligt the CPU in the project tree, and in the menu bar, open "Tools" ... "resources".

I means those block information will stores in which DLL ? then when the project loaded the information is also loaded in the main app !

Your question(s) are not clear.
So, lets try this from a different direction - What do you want to do?