I havent done competitive to know how the leaderboards are shown so this may be a dumb question…can you see what the current top 1000 cutoff is?
If you go off that score and assume that threshold keeps the same pace to the end of the season you can estimate what the end of the season cutoff will be.
Edit: If you CAN see that, we are in week 3 of 11 for the operation (so 2 weeks have passed).
Multiply the current cutoff by 5.5 to reach a good estimate of the required points. ( 5.5X because that makes 2 weeks equate up to the threshold at 11 weeks assuming the same points would be earned over the course of the season)