How to fetch data from a database through a web service URL in VS 2017

I am new to this, I have a web service someone set for me, I have:

-web service URL -username -password -universe

1 parameter which is person's ID.

Query is all set, all I need to input is the person's ID for it to return the phone, so basically I need to retrieve persons phone number based on his/her ID and save that returned string as an string variable to be further put in a text box.

Would be ideal to have this executed when a form is loaded, don't know if that is possible.

Searched many sites and none explained how to proceed with plain Visual Basic/.net forms, only ASP and C#.

Hope my description is good, I am using VS 2017.

Please help.

Thanks a million