The ‘fruit of the Spirit’ is a Biblical term, one fruit (singular in the Greek) with 9 attributes; that is, character traits which represent evidence of conversion and growth:
“But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness and self-control. Against such things there is no law.”
From Paul’s letter to the Galatians 5:22,23
These are not character traits which the believer can force, but are developed by the working of the Holy Spirit it our lives.
If these character traits are not evident in increasing abundance, there is a question as to the validity of the conversion, or the extent to which the believer is “abiding in the Vine”, who is Christ.
“By their fruits ye shall know them.”