Wondering if an SVG file can be loaded into F360 and resized?
Yes you can import a SVG into Fusion 360.
As long as you unlock or unfix the drawing after you import it you should be able to modify it at will.
To resize it after its been unlocked select the whole drawing, hit the hot key S for search. Then hit S again search bar to start looking for scale. Select scale from the list and use tool to resize drawing.
Then, if you want it back to SVG, you have to export the sketch to SVG.