I want to delete a gig permanently from my profile. I want to make sure that if I delete a gig then It will remove all its reviews from the profile also?
No, all the ones on your profile will stay if you delete a gig.
No, Reviews stay on your profile. You can delete the gig!
Not quite sure why you are asking this question.
You have 3 excellent 5* reviews on your gig and your profile.
I delete Gigs from time to time and add new ones.
My 5-Star ratings and any reviews do not disappear.
Why exactly do you ant to do this thing?
Maybe if we understand your reasons, we can help better.