大好き (daisuki) means “love, really like”

More examples

私はりんごが大好きです。watashi wa ri n go ga dai su ki de su

I really like apples.

これは私が大好きな映画です。ko re wa watashi ga dai su ki na ei ga de su

This is a movie I love.

Expresses a strong feeling of fondness that makes a person or thing especially appealing.

好きsuki: Expresses a strong feeling of liking for a person or thing.

人や物事を非常に好み、強い愛情や愛着を感じるさま。hito ya mono goto o hi jō ni kono mi tsuyo i ai jō ya ai chaku o kan ji ru sa ma

Combines 大 (dai, "great") with 好き (suki, "liked or fond of"), forming a word for liking something to a very high degree.

In conversational Japanese, 大好き (daisuki) is a na-adjective, so strong liking is commonly expressed with a noun plus が大好きです (ga daisuki desu) rather than an English-style verb.