Can I see the metro map?
'Mappa' — MAP-pa. Double 'p' gives a crisp, slightly held sound before the final 'a'.
Ask a station attendant or fellow passenger when you cannot find a map. Paper maps are available free at ticket offices in most cities.
'Posso vedere' means 'can I see' — 'posso' from 'potere', 'vedere' the infinitive. 'Della' is 'di + la' (of the). This is a level A1 question because it combines two simple high-frequency verbs without complex structure.
Dove posso trovare una mappa?
Where can I find a map?
Asks for the location of maps rather than borrowing one.
Ha una mappa da darmi?
Do you have a map you can give me?
Slightly more specific — you want to keep it.
C'è la mappa della metro sull'app?
Is the metro map on the app?
For digital natives — most metro apps include offline maps.
Free paper metro maps are available at all ATM Point desks in Milan and at most Roma Mobilità offices in Rome. The official city transport apps (ATM Milano, Roma Mobilità) have interactive maps that work offline.