Please tell me if 7 day subway pass is available in Shanghai?

Yes, the 7 days subway pass is available.

You can take the subway line 2 from the airport and get off at East Nanjing Road, which is about 380 yards from your hotel. you can walk there.

From the Hilton Hotel, you can take a taxi to the Shuichenglu Subway Station to take the line 10. Get off at East Nanjing Road, take the Exit 1 and walk about 0.3 miles to your hotel.