Can I use license on many different computers with 1 account has been purchased the license.

Hi,

Thank you for posting your query here.

I would like to inform you that Adobe allows you lets you install your Creative Cloud apps on more than one computer, activate (sign-in) on two, but use them on only one computer at a time.

Which means that if you have purchased One Subscription for Photoshop and Illustrator, you may install and activate the products on two device, but use the product on One computer at a time. 

You may as well refer to this help article for your reference : https://helpx.adobe.com/in/download-install/using/install-apps-number-of-computers.html 

Hope it helps. 

Thank you.