Absolutely! Development, staging, and test sites don’t count towards your license’s site limit.

You can activate your license as usual. If the site is recognized as a development or staging environment, you’ll see a message during activation confirming that it doesn’t use a site slot.

You can find more information here:
https://docs.admincolumns.com/article/81-how-many-sites-can-i-activate-with-my-license