In cup i think its drilled through , and a longer bolt with nut , there 27nm are ok
thats #3 in the diagramm of the workshop manual ? #15 are the 3 bolts that hold
the steel part in which #3 clamp the bottom ball joint , or not?
to get 2-2,5 degrees , i think the better option are the polybushings with camber setting in the front of the wishbone.
standard is by the way 1-1,5 degrees
they do , in fact late clio3 and clio4 has the same
https://www.dna-racing.it/en/renault-clio-4-components/1307-renault-clio-4-dna-racing-top-mount-kit.html