Hey Nicolò. Sorry I made an error so here’s the correct form. The word “with” is a preposition. We use it in this sentence to show something we “have.” So you have a bachelors degree so you’ll have to use “with.” The word “in” is used to talk about the position of something in a space such as “The dog is IN the house.” It answers the question “Where is the dog?” It’s in the house! Hope this helps :) If you found this helpful then feel free to message me so we can start working on a plan for you to improve your English and uses of prepositions !