The computers that you mentioned in your other threads are certainly internet-capable. The question would be whether or not you have any internet connection in your house? I assume you're messaging from a mobile phone - do you have home WiFi or just a cellular connection?
If you can get your new computer online, you can go download the software for free online and then set it up. The download would be in the format of floppy disk image files. You can think of these like a floppy disk on a file. You would need a program that can write these disk image files to a set of floppy disks - a program called WinImage can do this.
I understand that this may sound complicated, but it really is much easier than it sounds. You definitely don't have to be anywhere close to an expert to do these things. If you run into something that you don't understand during the process, you can also always do a google search for your problem, or for a guide on what you're trying to do. There's almost always something out there and they're usually pretty beginner friendly for the sorts of things you need to do.
That's all if you can connect your new computer to the internet though. If not, it still wouldn't be very difficult.
You can still install WordPerfect through the same method described above, you'd just need another method of getting the floppy disk image files onto your computer. Here's a quick guide on how you could do that:
1. Go out to a local computer store, like a Best Buy and get yourself a USB Flash Drive (also known as a memory stick or a thumb drive).
2. Get access to a computer with internet access. Your local library will likely have some that you could use.
3. Download the floppy disk images for WordPerfect. I'd recommend getting them from here:
https://archive.org/download/word-perfect-5.1-for-dos-5.1-1990-12-3.5-720-kb-english/WordPerfect 5.1 for DOS (5.1) (1990-12) (3.5''-720KB) [English].zip
(Above is a direct download link)
4. It will download a ZIP file. A ZIP file is like a folder, but compressed to save disk space. You will have to extract the files from the ZIP folder. You can do this on Windows by right clicking on the ZIP file and then clicking extract from the menu.
5. It will extract a bunch of .img files, which are the floppy disk image files.
6. Copy these files from the library computer (or other computer with internet access) onto your USB drive that you bought.
7. Download WinImage from here:
http://america.winimage.com/download/winima81.exe, and also copy it to your USB drive.
8. Go back home and plug the USB drive into your new home computer. From here, you can run the setup program for WinImage in order to install it to your computer. You should be able to get through the installer on your own.
9. Now you're ready to write the disk image files to a real floppy disk. Here's a guide on how to use WinImage to do that if you need help with that:
https://www.izcorp.com/wp-content/uploads/How_To_Make_Floppy_Disk_with_Winimage.pdf
10. Once you've written all your WordPerfectdisks, you can insert the first install disk and then install WordPerfect off of floppy disk.
This here is very important though: That version of WordPerfect will only work on MS-DOS-based Windows (Windows 95, 98, or Me). If your new computer is not running one of these Operating Systems, and is instead running something like Windows XP, 7, 10, etc., WordPerfect will not work.
Make sure that when you get your new computer, that it is configured properly to run DOS software.
You can also use emulation programs, such as DOSBox, on newer Windows versions. DOSBox is a software program that pretends to be a computer running MS-DOS, allowing you to run DOS software on newer computers, but you'd have to learn how to use it first, and it's a bit more complicated then using real hardware.
I hope this helps and let me know if you have any questions!
Really though, it may just be time to migrate to newer software, like Microsoft Office which you mentioned earlier. It will run much better on newer computers.
