no assault，medic，support and recon master mission，what shall I do?

Hi @JoshCat I've listed some suggestions below from the BFV FAQ (https://answers.ea.com/t5/Battlefield-V/Battlefield-V-FAQ/m-p/10488137#M76558), they sometimes work. There's also contact details for EA Help in case this doesn't work:

- Try power cycling your equipment (full shutdown of console/PC, unplugged for ~2 minutes, restart your router).
- Some items appear in your Armory, please check it out.
- Play another full match and/or earn another player rank. Remember that you will need to wait for the next round to begin before leaving the match.
- Completing a round of Combined Arms has been known to work, give it a try.

Did none of that work? Please contact an EA Game Advisor for more assistance in the matter.

https://help.ea.com/en/contact-us/
https://twitter.com/EAHelp/
http://www.facebook.com/EAHelpHub/