Could you please put a rocket launches achievement?

I can try to track that in my next update.

it would be great

So, after much reading and testing, I can't track the actual launch. There are other mods that do that though. I tried to reverse engineer the code but it's not within my knowledge or capability.

I think it must be here: https://lua-api.factorio.com/0.15.2/LuaForce.html -- and find there "rockets_launched" string.
in the end there must be something like this:
local force = rocket_silo.force
local force_name = force.name
local surface = rocket_silo.surface
-- https://lua-api.factorio.com/latest/LuaForce.html#LuaForce.rockets_launched
local rockets_launched = game.forces[force_name].rockets_launched

this code is from darkfrei mods! Thank him a lot!