Going unbeaten in the group instinctively sounds unlikely given we struggled to draw at home against Azerbaijan just ten weeks ago, and have never won a Nations League game (along with San Marino, the only nation to hold that "honour").
The four games in June will be interesting - we'll surely have to use some squad rotation for those? OK, you wouldn't in a major finals, but I can't see clubs being happy with their players playing four Nations League games in ten days. As it stands, we have one competent forward, and to stretch him over four games is a big ask (especially if he gets covid again!) OK, June is six months away, and things could come good for Idah/Connolly/Parrott in the meantime, or Keane/Scully could become options. But I think that four-game stretch will be a test for us. We've also tended to call up four centre-backs for three slots, so that's not leaving much scope for injuries (in the three-game run in September, we did get an injury and didn't call up a replacement). And all our wing-backs (McClean, Doherty, Coleman, Stevens) will be the wrong side of 30, so that's a big ask of them too. We've only what - two friendly games in March to try blood a couple of new options?
Armenia are better than Azerbaijan and Luxembourg, which isn't a particularly high bar. But they're capable of the odd upset, and Mkhitaryan can play.
On paper, Scotland are simply a better team with a better manager than us, and their last match was a 2-0 World Cup qualifying win over Denmark, which is a serious result. They seem to have kicked on from the Euros, when they were a bit toothless up front but otherwise quite unlucky not to do better (the Czechs in particular defended brilliantly and hit them with two sucker counters)
I don't know a lot about Ukraine's players to be honest (except Zinchenko can't be bad) but while they were awful at the Euros (yet somehow got to the quarters), their qualifying record tends to be decent, and they won at home to Spain and Switzerland in the last Nations League.
I think the minimum should be seven points - four from Armenia and one win against Scotland/Ukraine. Above that is into a bonus territory.