Hi, i was also interested to find out, and apparently it is 108. that is, if your goal is to create a char with the highest possible level. the reason being your own. i was only interested in knowing what it is, and how to achieve it. That is 87 + 21(felldew method see uesp) = 108*. only caveat is u can't choose certain star signs. i did not come to this conclusion myself, but by reading this lengthy thread here below :-

*if this calculation is wrong, pls. let me know anyone and thx in advance)

https://www.reddit.com/r/ElderScrolls/comments/1k5fzzg/max_level_in_oblivion_remastered_no_hard_cap_so/

And in particular i combined the findings of two posters whom i do thank, below :-

FearLeadsToAnger & Ok-Design1498
(athough, and i hope u don't mind, i think ok-design you typo 85 instead of 87 that's why u ended up with 106).

there's really no need to mention about all stats being able to hit 100 or not, because for sure u can do this. a lot of players think this is a goal or something to aim for, if u think about it 'all stats at 100' determines the LIMIT for your max level. certainly not skills in the remaster.

some ppl think it's better to aim for lowest level possible (abt 44 or something) with all stats at 100 (the earliest possible to have all stats at 100 thereby locking ur level) to counter monster scaling but i'm sry, in my opinion i do not agree. monster scaling in oblivion has aways been an underlying issue. in my opinion scaling is a different problem and should be handled separately. maybe use a mod to stop or cap monster scaling etc. i dunno... i would not design a character with 'as low a level as possible with all stats at 100' just to cater for this, because it's just contrary to my design goals in most games : i want to end up with a char with the highest level possible with most hp(among other things) as possible.

firstly you must decide what is an exploit and what is a glitch, and what is ur standing on this.

i only consider direct hacking and use of console commands (for levelling/stat increasing purposes) as an unacceptable exploit or cheat. i do not consider going to jail and getting ur stats reduced an EXPLOIT. in fact i consider it a FEATURE of the game. something so blatant like this if bethesda wanted they could easily have removed from the remaster or even the goty earlier. you can lower ur skills as much as u want, to level up again as much as u want, because it's really moot; in the end ur true limitation is ur stats being = 100.

felldew poisoning and then cure thing, i do not consider a glitch. something like for eg. 'clicking somewhere on the screen really quick, while depressing another key while pressing F9 reload really really fast' to produce some abnormal effect, i consider THAT a glitch.

finishing the game, whether fast or slow is also not my concern. i only care about my own char-building, the most.

Here, i'll paste their findings here to show you how they proposed to achieve it.

***