plot(GrowthSW$tradeshare,GrowthSW$growth,
col = "blue"
xlab = "tradeshare"
ylab = "growth"
xlim = c(1, 5)
ylim = c(0, 40)
Hi Humzah and welcome.
Functions in R need commas between arguments. There are missing commas after where you define col, xlab, ylab, and xlim.
For reference, here's a nice general explanation for where this type of error can come from. r - Error: unexpected symbol/input/string constant/numeric constant/SPECIAL in my code - Stack Overflow
If you're just getting start with R, I'd encourage you to work through Hadley and Garrett's book R 4 Data Science. It is a friendly entryway into doing this kind of work with R.