Will I get kicked out

Let me preface by saying I know I’ve made the greatest mistake of my life.
I reached my absense limit for one of my classes. My teacher messaged me about an automatic withdrawal from the class. I forged documents of a schedule from another class to make it look like I had less absences than I did. No surprise, I got caught. Do you think that most schools would consider this grounds for expulsion? I don’t know what to do I can’t think straight at all. I feel like my life is ending and I am struggling with my depression.

Ask your school. Each school has different policies.

A withdrawal isn’t the end of the world. You shouldn’t have forged school documents.

Take the withdrawal and move on. Just make sure it is a W that will not count against your GPA.
One W will not hurt you. You are lucky to withdraw. Hopefully your can learn from this experience.
Good luck.

Is the issue about the withdrawal or the punishment for the forgery?

All you can do now is talk to an advisor and see what your options are IF disciplinary action is taken. If it isn’t taken, then no need to worry. My advice is that if action is taken, make sure to be truly apologetic and take responsibility, which is what you seem to be doing.

I’m very sorry to hear that you’re struggling. Please know that I’m here rooting for you, and PLEASE reach out for help if you need it. <3