Found an interesting guess for Sanji's EoS bounty (may translate to powerlevel too) taken from TT fyp page (I forgot the name, too much scrolling):
Luffy is expected to have 5.6 (for Go Mu and surpassing the old Pirate King, Roger's bounty)
Zoro is expected to have 3.6 (surpassing the old WSS 3.5B).
Now,
1. Croc is paired with Mihawk. There's a good chance Sanji will fight him.
2. Croc's bounty is a pun, but it suspiciously is 2B.
3. Luffy's/Roger's bounty - Zoro's/Shanks bounty = Croc/Sanji's bounty
5.6 - 3.6 =2.0
Luffy is expected to have 5.6 (for Go Mu and surpassing the old Pirate King, Roger's bounty)
Zoro is expected to have 3.6 (surpassing the old WSS 3.5B).
Now,
1. Croc is paired with Mihawk. There's a good chance Sanji will fight him.
2. Croc's bounty is a pun, but it suspiciously is 2B.
3. Luffy's/Roger's bounty - Zoro's/Shanks bounty = Croc/Sanji's bounty
5.6 - 3.6 =2.0