i got a new phone recently and i’m trying to sign into my old apple id account but it keeps asking for a verification code from a number that i do not know. please help

See if anything here helps.  If necessary, you can use account recovery as explained in the link at bottom of the article.

Verification code - how to get one and sign in with two-factor authentication.   

My old iphone was stolen and i am trying to get my new iphone to work with my old iphone id but it keeps on asking for a code from my old phone

Did you read what I posted above?