"Topsoil" is the top 4 to 6 inches of soil from someplace that often might include some organic matter. There is nothing magical about anything called "topsoil" unless it does contain adequate (5 to 8 percent) organic matter, but then you are also adding 92 to 95 percent more minerals to what you already have.
I would try, hard, to convince him the soil needs organic matter, not more mineral.

Bottom line is you really don't know what you get with 'topsoil' unless the seller goes to the bother of having it tested which is unlikely. So just consider that you may have to amend it and that compost may help if it is good quality. Unfortunately it's the same problem with purchased compost in that we don't know the quality. I would advise you not to waste a minute in stressing about it, just mix the two together and use. If there is extra you can find low spots or make a somewhat raised bed. With no pictures and no idea of what your stubborn Dad's garden looks like it's difficult to advise.

A few years ago when I needed to fill some low areas in my yard (in my garden as well as the near pasture) I bought 4 big loads of 'topsoil' which was the local clay soil with sand added. It looked better than the native clay I have on my property so may have been from a ranch location. However, it was full of weed seeds so I was busy pulling weeds that year in my garden. Fortunately they were annual weeds so in the pasture the horses ate them before they went to seed and they are now gone.

The large bed in my garden had good soil I had amended over many years so that is now under at least a foot of 'topsoil' that I've had to amend so it's getting better and the plants are doing fine.

Thank you both for your input! I feel much better about it now haha! I got my self all worked up because i didnt know what to do with it and felt like i was forced to get it, then as we were spreading stuff around he kept askig where i wanted it lol! I think i. Will try to upload some pivs

It sounds like you're looking for ideas to get rid of it. If you have low spots you can blend it with some compost and spread it there. If there is grass growing you can add a half inch at a time and let the grass grow through.

Is drainage OK around the house? If there has been settling over the years, there might be a few spots you can fill in. Just don't end up with soil touching the siding or you invite termites.

You could just make a pile somewhere and deal with it later. I have some extra from getting a yard of it this spring, but I'll use it later when making a new raised bed. I just don't have time now. I'm piling it in an unused garden bed temporarily.

Last resort, stick a sign on it, FREE TOPSOIL. YOU LOAD. Or post it on Freecycle or the free section of Craigslist.

PS you were right in the first place, poor soil needs amending, not more soil.