Step 1: Open Browser
Step 2: Search "www.Apkward.com'
Step 3: Type NBA2K20 in the search bar of apkward
Step 4: Download the apk (Pick one)
Step 5: Download OBB file
Step 6: Copy paste the obb file to File Manager -> Android -> OBB
Step 7: Install NBA2k20 APK
Step 8: OPEN THE GAME AND ENJOY