How to make a script so that the game downloads data from the host?

Question

C++ / C#

I ran into a problem - I need to make a script so that the game would take data from the Internet at the first start. I didn’t find such and such an answer to this question in the Russian segment and in English :(
Can you please help with this (preferably for android, because Google Play does not accept games with a weight of 150+ MB)

Answer 1

docs
Isn't that what you're looking for?