Probably not much if it does. Having said that, beer changes in amazing ways when it conditions.
A few other things you may want to think on.
1. The use of a secondary has for the most part gone the way of the Dodo bird. Unless you need to free up the primary for another batch, or you're doing long-term aging or extracting flavors or something, it's not necessary. It seems like most of the kits recommend it, though if you were to do a poll here amongst experienced home brewers, I'll bet you fewer than 5 percent use a secondary.
I think there may have been some value with a secondary early in homebrewing's history--the yeast wasn't as good, there was concern about getting the beer off the yeast before it died and autolysis set in and created off-flavors in the beer. But you can go a month in primary without concern. Generally, brewers would be bottling at 2-3 weeks, so it's not in the primary long enough to matter. And some people argue that the yeast helps clean things up so there's value in keeping the beer in primary.
2. I'm drinking batch 58 right now, but I remember vividly being new at this. A suggestion is to brew relatively simple beers for your first 5 or six, and even repeat a couple. The goal is to dial in the process, get it down, and then branch out to different recipes. Brewing isn't rocket science, but neither is it simplistic. As you know, there are many moving parts, and learning to control them is part of the process.
3. I have gotten to the point where I'm brewing some pretty good stuff. Not just my opinion, either. The way I got to this point was continuous quality improvement. Every time you brew, try to do something better. Your beers will get better and better, and you'll have a harder time keeping your friends away. If you want to.
4. Most here will tell you that fermentation temp control is one of the biggest leaps forward they made as a brewer. It was for me. You can get a tall mini-dorm-style refrigerator for this, and they don't have to cost an arm and a leg. I have one (see pic below). Even if that's not an option at this point, you need to try to control ferm temp. Yeast is exothermic, meaning they produce heat while they work. The temp of the fermenting wort can be 5-10 degrees higher than ambient temp surrounding it.
A used refrigerator, an Inkbird 308 controller, and a reptile heat mat is all you need to make a great leap forward.
And if it's not an option at this point, you can also use the old swamp cooler method. It'll knock about 5 degrees off the temp of fermenting wort bringing it close to ambient. To do it is simple: get a turkey pan from the dollar store, put the fermenter in it, add about 2 inches of water or so, drape an old t-shirt over the fermenter so it dangles into the water. The water will wick up into the shirt and its evaporation will help cool things. I have a pic below showing that as well.
Anyway, good luck, welcome to the hobby, and enjoy!
View attachment 585072 View attachment 585071