Hi so I probably should know this but please remind me. I know that the most points goes to the lowest pet. Also if the level gap is too big a pet only get like 1 exp point. And I think that if a pet falls in battle the other two get more points.

1.) I would like to know if a pet has unlearning does the points that pet would earn get lost or go to other pets in party
2.) confirm my thought above about knocked out giving more points to other two pets

So far as I am aware, points do not redistribute amongst pets at all. How much exp they get from a battle calculates based on what enemy it was, what level said enemy was, and the pet's own level. If they are unconscious at the battle end or have an Unlearning philter, they merely do not get the exp, and it has no effect on what the other pets in the party get.

thanks one more question regarding exp

my level 70 pet has 100%exp and is lets say 100/90 with the biggr number clearly on top where on lower pets the littler number is on the top on the purple level bar(obviously an example) I assume this is because 70 is currently max level. and it has gained surplus exp So what happens as that pet gains exp

As you can see on this exp bar...

38,459,712 / 2,698,176 1,425.40 %
Absolutely nothing. When the level cap is raised, all of our 100% pets at 70 will instantly go to 71, and be at 0% there, so as to keep players with several dozen times the exp to level up going instantly to level 75 or whatever cap.
At one point during 2019 Fall Fest, there were plans to add Prestige levels, which would add a level-rank up stat boost to the Sylesti's base stats for every time they completed another 100% at the level cap, but that was scrapped or at least sidelined. For now, there is no benefit or detriment to exceeding the level cap.