https://www.agando-shop.de/product_info.php/info/p101958
Nope that won't work.
Fortnite will go is not a demanding game, how much FPS do you want? 10th
for warzone the part is never enough, for example
Sufficiently yes it is an APU and is not a dedicated GPU, which means that you will lose performance in other games if they are more demanding
It is sufficient, but not more. If you do not need maximum settings and are more than satisfied with 60fps, the performance is sufficient.
However, you can't expect a gaming PC for 300 euro, at most a used one. Things that bother me:
The power supply is probably a China beater.
RAM does not run in dual channel (10% less performance even in games)
No SSD → Long boot and loading times
Just have a look at the system requirements and compare, it's not difficult. Whether it is "good" depends on what you expect, ultra is not there, but it will be enough to start it.
https://systemanforderungen.com/spiel/fortnite