upward(s) of
preposition uk/ˈʌp.wədz ˌəv/ us/ˈʌp.wɚdz ˌəv/
C2 至少；超过
If you say something is upward(s) of a number or value, you mean it is at least the stated amount and probably more.
Upwards of 50,000 people assembled in the main square. 5万多人聚集在主广场上。