I am using a minecraft server host

i have a domain

i tried to forward it to my server with some yt tuts

but i think port part isnt working for me

because when i put the domain it shows the name of my hosting provider in server discription
but dont conect to my server

so, i think the ip part is working but its problem with port


the image below is the dns i have hiden the ip and domain but i have writen wht was there

i am new in these, so plz help if u can asap

Thank You.