Fast typing is the helpful skill for data entry jobs.
Computer skills and knowledge in the field is very, very desirable. You do not need to be familiar or to know how to use every software, but if you have basic to intermediate computer skills and you can learn to fast it can be good enough for lots of data entry job positions.
The sense of confidentiality of data, especially when you work from home without any kind of legal contract between you and a client, is a must.
Good luck. Don’t feel bad if you’re having a hard time. Lots of people are, and not just teenagers. If you would like to learn more about most commonly asked questions and answers during interview I would recommend watching this video, https://www.youtube.com/watch?v=w7i0Ck9bx_A