I would strongly recommend looking into available job postings and seeing what they say you will be doing as your primary responsibilities. You can then judge how best to spend your time practicing with this information.
However, that won’t be relevant for job performance. I’ve been in IT management for 15 years and never have I seen someone being graded based on typing speed. In fact, the most important factors are usually personality-driven: Do you keep the commitments you make, such as actually doing tasks you said you would, and keeping deadlines? Are you proactive in searching for solutions (e.g. Google, ChatGPT)? Are you friendly and helpful towards your co-workers? Traits like this are highly valued; technical skills can usually be learned on the job. And if those are lacking most companies will either assign someone to teach you or let you attend external trainings.
As TNE wrote, check the job posting to see what technologies you will be working with most, if you want to prepare a bit. In lieu of anything specific, knowing the basics of (Microsoft) Office (Teams, Outlook, Excel, Word) is always helpful, regardless of what exactly your task is.
I have been interviewing prospective candidates for jobs for over 15 years. All job postings will list what skills are needed. But from most interviews I have done soft skills are more important, for instance people skills, teamwork etc. Most jobs will have a specific set of tools already in place. I would suggest calling the prospective company and learn as much as you can about the job and company. Knowing about the company will benefit you in the interview.
To me it definitely sounds like a good start, as knowing the workings of databases and data processing software can surely play a part in being good at data entry.
If you’re looking at touch-typing, KTouch was pretty cool last time I checked it out.