It's pretty apparent that Beth and Randall still have a rocky road ahead. While the two were able to work out their issues when Randall ran for office, he's now asking Beth to put her dreams of being a dance instructor on hold to help raise their family. Since we know that Beth ends up following through with that dream in the flash-forward, we can't help but wonder what that means for Beth and Randall's marriage.
Honestly, it doesn't seem likely that Randall and Beth will actually be divorced in the flash-forward. Not only would This Is Us writers have some angry fans to deal with, but Randall was seen wearing a wedding ring in the flash-forward when he calls Toby. Perhaps the two are just separated and going through another rough patch. Keep in mind that in February 2018, Sterling K. Brown told fans that Beth and Randall would be "JUST fine, no matter what." Unless something has changed, we should keep the faith that Beth and Randall will make it through.