I'm no fan of Paint and would highly recommend you use something other than that to create graphics. There are plenty of free options with more power than MS Paint.
Paint.NET is a far better bitmap editor
Inkscape or Draw.IO are options to do vector graphics or labels.
Word is only useful if you are using those labels as artwork and either:
- Doing a mail merge with other changeable text
- Printing onto particular sticky label sizes and using template alignment for that product eg Avery