is it possible to make a strategy game with unity and are there any resourses on how to
“Everything” is possible, so the answer at your question is “yes”. However, ‘strategy game’ is a too subjective and generalized concept: even if there exists a tutorial, maybe you will find guidelines to a type of gameplay that isn’t what you meant.
If I can give you an advice, start with learning the basis of Unity. You can check the following link: How can I start learning Unity fast? ( List Of Tutorials ) - Unity Answers
At that point, you’ll see that it will be easier to try on your own or making more specific questions, having more focused ideas.