अब क्या करें

what should ... do now?

→ अब
phrase Uncommon #3,951
what should ... do now? The verb form changes to match the subject; the phrase can also express uncertainty about what to do next.
HI: अब क्या करें? बारिश शुरू हो गई है।
EN: What should we do now? It’s started raining.

अब क्या करें?

What should we do now?

— डाई हार्ड (1988)

अब क्या करें कांति भईया?

What should we do now, Kanti bhaiya?

— OMG 2 (2023)

बाबा, अब क्या करें?

Dad, what should we do now?

— Jawan (2023)

अब क्या करें, मोनिका?

What should we do now, Monica?

— Monica, O My Darling (2022)