1- Recitation of Surat al- Kahf on the day of Jumu’ah (Friday): This is due to the statement of the Prophet ﷺ: “Whoever recites Suratul-Kahf on the day of Jumu’ah will be brightened with light between the two Jumu’ahs.” [ Source: Al-Hakim.]

2- Sending as many blessings as possible on the Prophet ﷺ: On the authority of Abu Mas’ud al-Ansari ,, the Prophet ﷺ said: “Send several blessings on me on the day of Jumu’ah, because anyone who seeks blessings on me on the day of Jumu’ah will have his blessings presented to me.” [ Source: Al-Hakim.]

3- Taking a ritual bath (ghusl) and using perfume. This is due to the Prophet’s statement ﷺ: “A man who performs the spiritual bath on the day of Jumu’ah, cleanses himself as best as he can, rubs oil on himself or perfumes his body, and then goes out (to the mosque) and does not separate two (men sitting together in the mosque), and finally observes what is written for him (supererogatory Salat) and keeps mute while the imam speaks (preaches), will have his sins between that Jumu’ah and the next forgiven.” [ Source: Al- Bukhari.]
https://www.islamkingdom.com/en/fiqh/Fiqh-al-Ibadat/Salat/alt-ul-Jumuah-(The-Jumuah-Prayer)