Im using MSFS, X-Plane 11 , P3Dv5 , and DCS. Currently with R5 3600 and RTX 2080 FE. Should i upgrade to 5600x? im still using 1080p by the way. I dont know what is it worth or not to upgrade 5600x.

I wouldn't.  Too much money for such a small upgrade.  The 3600 is a great chip, even today.

Have a look at this:  https://www.techspot.com/review/2185-amd-zen-3-ryzen-5600-versus/

I just ordered a 5800x to replace my 2700x. That looks like a large enough performance boost to justify the money, to me at least. Of it could be that now that I have both my Alpha and Bravo, and finally figured out how to get around the 10/1000 Bug, I am just bored and needed something else to tinker with.

Now if you could just get a video card,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,