sorry i meant my "main mesh" (not clothes mesh but the body mesh i was meant to say as my main mesh) to be parented to the armature.

anyway i tried left click on my main mesh (in object mode) then shirt and left click on a bone to parented my main mesh to armature

but i "think" i didn't see any new files on the top right of the screen so i thought it did nothing

if you can't help me please say so or if you could i would say thanks in advance