I’m using GIMP 3.0.2 and I have the words ‘Praise Wave Productions’ going vertically down both sides of a centered photo. The problem is that the vertical text on both sides does not line up exactly the way it should. I need somebody to help me fix this, so all three words line up perfectly in straight vertical columns on each side of the photo.

Regardless of content.

Just a guess but it looks like you formatted some of the text using the on-canvas editor. Use the Text tool tool options to set size, spacing etc. Then use the right-click Vertical left-to-right (upright orientation) option



Edit: Of course it might be the font, Which one is it ? Try a different font.

OK, another closer look and I now think this:

The black text is from the screenshots.
It looks like a sans-serif font which is proportional - I's and L's and 1's are narrower and take up less space than other characters.
If you try and make vertical text by putting each character on a new line, setting right-to-left justification and tweaking line spacing, you get the blue text with characters "nudged" over to the right.



What you need to do is:
Make the text as normal, horizontal - left-to-right - dynamic text box
Right click in the on screen text and choose Vertical right to left (upright orientation)
Then in the text tool options tweak the character spacing to make the letters closer together.