If you don’t have computer skills, many public libraries offer free classes on the weekends. Enroll in one of these classes.
If you don’t have previous customer service experience, try getting an entry level job as a cashier somewhere. If you work as a cashier for six months you’ll have experience with customer service and handling money and you might be able to leverage this into a bank teller position.
You might also have to pass a basic math proficiency test. [3]
Keep in mind that most bank teller positions require you to have a high school diploma.