Install mod on minecraft server

Note - If you do not fill in every section below, your post won’t be answered - you must provide the steps you have followed so far and the actions you’ve already taken. Make sure to remove this notice from your post too.

OS Name/Version: Windows Server 2016

Product Name/Version: AMP Release “Halimede” v2.4.0.10, built 27/10/2022 18:15

Problem Description:

Hello, I am desperately trying to install the Buildcraft mod on a new minecraft server.
But I just don’t know how to do it.
I used to use spigot server in the past. now I took forge because I read i need forge for mods?
Can someone tell me how to install mods?
Thanks