Hey, hellatze, since I know that English isn’t your first language, you get the benefit of the doubt on things, but your request isn’t at all clear.
I can tell you’re looking for CR 10+ boss battles, but do you want ones from APs, modules, scenarios, homebrew, or all of the above? Do you want full details including environment? Why would we need to spoiler-tag the boss name? Do you want to know the details of the party that encountered such a boss?
And 10 round fights? Almost unheard of.
Just hoping for a bit more clarification about what you’re looking to get.
Okay, what data? What boss? Because I can tell you about my party of level 8, mythic tier 4 insanely overpowered characters who fought and defeated (kind of... there was one survivor and she was polymorphed into a sheep) a CR 20 rakshasa maharaja, but that’s not particularly representative, especially since it involved a retributive strike from a fully-charged staff of the magi.
The best generic help we can give is to use the encounter building rules.
Every campaign, and indeed, every boss fight are going to be different based on the adventure style and party composition, because encounters should be specifically designed to be a challenge to the party that is being used at the time, especially big bads.
As far as I can tell, the data you're looking for isn't really attainable.
CR is a guideline. Sometimes it will over-estimate the danger of the encounter, some times it will under-estimate it. As a GM you use CR as a starting point, then use your judgement to fine-tune it to your own players.
Boss fights boil down to a couple of fairly easy things, really:
1) Numbers. Make sure there is at least parity of numbers between the PCs and the bad guys, to keep action economy a factor.
2) Who has the “level” advantage. A fair fight (coin toss on winning) is APL + 4 for 15 point buy. APL + 3 is in the PCs favour, and APL + 5 is weighted against them. That’s assuming no buff time on either side, fighting cold from a fresh start with all spells and abilities at full.
3) Does one side have an “I Win” button? If one side has an ability that the other side literally cannot counter (say, flying ranged attacks against a T-Rex), then the side with the ability wins.
As everyone has said, though, fine tune encounters to the party.
Tactics and environment also make huge differences, as does the amount of warning and pre-buffing that goes on, particularly at higher levels. I once nearly killed a level 10 party with a CR 6 half-dragon basilisk.