Scott will leave Manchester City when her contract ends in June.
The 35-year-old has been with the club for more than eight years and has won many medals.
She has been selected in the squad for the European Championships.
She said that she never thought she would be saying goodbye to Manchester City.
Looking back at what we've achieved in terms of trophies and as a team, I can't really believe it.
The club had just become a professional outfit when Scott was signed.
It was a bold statement to sign a member of the Team GB side that reached the quarter-finals of the London Olympics.
In Scott's first season with the club, City won the League Cup, their first major trophy.
Scott scored 19 goals in 194 appearances for the club, helping them win the WSL title in 2016 and the first of three FA Cup titles the following season.
She spent the last two seasons out on loan, with a former side in 2020-21 and a new one in the past season.
She said she had many amazing memories along the way.
I have had some great opportunities over the last couple of seasons with my loan spells, but I have always missed everyone here and that will be the case again this summer.
Over the last eight or so years, it has been a real journey.
Scott will be honoured and celebrated for her services to the club when she returns to the Academy Stadium next season.
Playing 194 games for one club is an incredible achievement. Over the years,Jill has made a difference to the game as a whole, and he has played a crucial part in many of the team's successes.
Her dedication and commitment to this club both on and off the pitch is testament to her character and she leaves Manchester City with legend status and the gratitude of everybody here for her contributions.