Thanks Mr Hamid,

but i want to create Project auto from sale order without service line item

You don't need any service line. I just said, you need to remove the condition of the invisibility of the field. that's it. But you need to add the project to the order.

even you can remove the "no_create" option of the field, so that you can create a new project directly from the order.

Thanks for your reply;

i did't find no_create field of Project_id in studio

Hi Muhammad,
In Studio, select the field "project", on the left pane, you will see a checkbox "Disable creation"; just uncheck it.
(We cannot add a picture in a comment, otherwise I would have done this.)
Good luck.

Jaideep,
the reason I didn't offer this is that, this solution will create a project for every single SO if confirmed. I believe this is not a good solution for a scalability of a system, if there is no condition in between.

Muhammad,
if you want to use the automated action, I would recommend to add a checkbox or something similar saying "create project" and then the automated action should use that (i.e. when this checkbox is set to True and the status changes to done, then create the project). You also need to use python code in the automated action to add the right sale_order_id and partner_id, and then update the SO with the newly created project. Be aware that you'd better make the new "create project" field readonly if the SO state is done.
To sum up, if you are not familiar with the automated actions and writing python, this solution will be more complex for you. :D