そして、入国審査官の審査を受けて上陸許可を受けなければなりません。

、。

And then you have to pass through inspection by an immigration officer and receive permission to land.

Literal

And, immigration-officer [gen-の] inspection [obj-を] receive-[and-て] landing-permit [obj-を] receive-[must-なければなりません].

Formal travel-procedure vocabulary. 審査 'inspection / screening' paired with 受ける 'to receive / undergo.' ~なければなりません is the polite variant of なければならない 'must,' with the ~ません polite negative and なる for 'to become' (so literally 'it must become that way'). 上陸 '(to) land / come ashore' is the formal verb used in immigration contexts, reflecting the nautical origin of modern air-travel vocabulary.