Looks like they are currently working on fonts and text.
But for now your options for proper cursive spacing are:
1) add each letter as an individual text element and place them as you wish (this would only be viable for a few small words or phrases). https://help.videoscribe.co/support/solutions/articles/11000046018-font-kerning
2) make an SVG image for each cursive phrase, using inkscape or illustrator. https://help.videoscribe.co/support/discussions/topics/11000009315