“There’s no scriptural evidence or proof for the claim that Mary was sinless, is there?”
No. There isn’t.
It’s hearsay.
I am under no obligation to respond to rude, ignorant, abusive, bellicose, and obnoxious accusations.
It is written, ‘Man shall not live by bread alone, but by every word that comes from the mouth of God.’
Well, you're just engaging in verse slinging - a common tactic, with you, isn't it?