Final working solution using @Arrigo response and @Samitha Chathuranga comment, I'll put all together to build a full response for this question:
Open Git CMD console and type command 1 from second picture(go to your project folder on your PC)
Type command git init
Type command git add --all
Type command 2 from second picture (git remote add origin YOUR_LINK_TO_REPO
)
Type command git commit -m "my first commit"
Type command git push -u origin master
Note: if you get error unable to detect email or name, just type following commands after 5th step:
git config --global user.email "yourEmail" #your email at Bitbucket
git config --global user.name "yourName" #your name at Bitbucket