Im getting a Dingle M1530 laptop and dont know wheter to upgrade the screen resolution.?

It's 6 of one & a half dozen of other.
If you will mostly watch vids, go for the upgrade. Whether not, I would weigh the benefit against 3 things.
1)how important it is to me
2) How often it will be NEEDED
3) Cost compared to the stock screen
Only you can truly decide whether it's worth it