Law / Invitation visa from Poland [4]

Hi i have a girlfriend from poland we are in long distance relationship for 8years

And she is trying to send me visa/invitation but she dont know

And for my situation im from sudan i live in Saudi Arabia

( i cant travel from saudi so i need to go back to Sudan as soon as i get a visa)

1/ i told her to send me to visa here in saudi and i will take it with me to sudan and travel from there ( is this possible?)

2/ where she need to go or do or call for more information?

3/ what the requirements

i hope someone answer me 🙏🏻