* "Vacaciones" is plural: The word "vacaciones" refers to "holidays" or "vacation" and is always plural in Spanish.
* You need an article: You need the definite article "las" before "vacaciones" to say "the holidays".
Correct sentence:
"Me gustan las vacaciones."
Translation:
"I like the holidays."
Let me know if you have any other Spanish sentences you'd like to check!