Good news: no negative effect.
Now, take the board back to sport chalet, get someone, not the flunkey noob, who knows what they are doing and have them:
Hot scrape the board to clean it. ( They might suggest going at it with a "board cleaner" but only if it is really bad. )
After it has been cleaned properly, ask them to rewax, scrape and polish the board and it should come back to you looking better than new.
ALL at no cost to you.
Get it. Wax it. Ride it.