Several tools are available to modify drawings in Autodesk Fusion 2D Sketch mode:
Fillet (video 17: • Autodesk Fusion 360 17 Sketch Fillet ... )
Chamfer (video 17: • Autodesk Fusion 360 17 Sketch Fillet ... )
Blend Curve
Offset
Trim
Extend
Break
Scale
Move, Copy
Functions for dimensions
Besides the Scale tool in the Modify Menu, there also is a 'scale entire sketch at first dimension' option, which can be enabled via clicking your account icon top right and then go to Preferences - General - Design.
Episode 18 of a step by step tutorial series of Autodesk Fusion (formerly called Fusion 360).