how hard is it to get into a good college?

Sydney
I'm in highschool and I just ended the year and my final year grades were B's to A's. I had about 3 B pluses. Is this good? Teachers put on so much pressure saying stuff like you will only get into college if you have a 4.0 and I know that's not true but that's what they say. Grade wise, how hard is it to get accepted somewhere you want to go. Thank you ;)