please use mention below steps hope it will work for you
- Click Win key + R, type slui 4, and hit Enter.
- After that, Win key + S to open Settings.
- Select Update & security and click on Activation.
- If your PC is not activated, you will receive an option Activate by phone.
- After that, start the Product Activation Wizard.
- Open charms menu and click Settings.
- Then go to Change PC Settings and click Activate Windows.
- Click on one of the options, e.g., Activate, Activate by phone or Contact customer support for help.
- Follow the on-screen directions and activate Windows using your phone.
also can use this link
i hope answer the question if issue resolve please accept answer