Server Ports/Portfowarding help.

I’ve recently created my own custom DarkRP server, and i have technical difficulty with buying a VPS/Dedicated Server.
Can anyone please help me portfowords my server, i’d be very grateful.
More information and your willing to help me add my steam.
Steam: Chickengbs

EDIT: Solved!

What router/ISP do you have?

Thanks for responding, and solved c: