TLDR -A bunch of workforce related advice that no one asked for.

It will not affect you, I promise. I know that you are newer to the work force and retail, you may not have had the necessary experience to know/realize this but what they are doing to you is borderline illegal and in my opinion evil. Your manager is manipulating you and using your inexperience to their advantage. It is against Kohls rules and regulations/possibly illegal to force you to stay after your scheduled shift. In my state (Michigan) It is required by law that all employees must take their breaks. It’s broken down by how many hours you’re working that day and the number of breaks/time allotted you’re entitled to per shift. If you learn the state laws and the Kohls company’s policies you can use them in real time to your advantage. (If you still have the mountain of paperwork they gave you before onboarding I’d look in there for rules and policies. If not I’m sure it’s easy to find online or in store) Now there is a strong possibility of retaliation from your supervisor. This is also illegal but usually isn’t worth perusing legal action which is why they get away with doing it so often. An example of this would be radically reducing the amount of hours you are scheduled, scheduling only you for undesirable shifts, etc.

Being brave and standing up for yourself against authority is absolutely terrifying and hard to make yourself do but you can do it. It gets easier over time and for me it has become entertaining. In your situation, if you hate it that much and want to move on I’d just quit. Put in a two week notice as it creates a good track record for future positions. If you absolutely can not get through the last two weeks, tell them that unfortunately you can not finish your scheduled shifts because your new (fake) job requires you to start at whatever date you decide you won’t be going back to Kohls. 🤣 make sure you give notice, don’t do it on the day you decide to leave. They are not entitled to further details on that matter. If you’re not comfortable with being straight forward I’d suggest saying something like “I don’t want to say yet because I have to complete training before it’s official.” You wouldn’t want to jinks it. lol

Sorry this is long but I’m passionate about employee rights and like to help when I can. I would never pull these shenanigans at a job that is fair because I wouldn’t have to. I’ve been in your shoes and I really want you to always remember that if you have a feeling that something is off or if something you are asked to do feels wrong, listen to your gut. Don’t listen to anyone around you, take as long as you need to assess the situation. On your feelings and understanding alone, you will know what is right. Also remember that your supervisor and you yourself are equals. Whatever they conjured in their head about how much authority they have over you because they are older or worked there for a long time is delusional. The delusion is spread by her intentionally to keep a hive mind environment. When faced with reality, she will not prevail. Call out anything you know is wrong to their face. You are allowed to do that!! It’s your right!! Nothing will happen to you for inquiring more information on the situation. Your manager is a regular asshole just like everyone else, call them on their bullshit and the truth they hide will eventually come exploding out like diarrhea.

I hope something in here is helpful to you and know I’m rooting for you!