كل سنة وانت طيّب congratulations (for an annual event)
يا عربي this is probably just their way of saying 'mate' - it literally means 'Arab' - it would help to know where the speaker is from
عقبال ١٠٠ سنة إن شاء الله & lest you [reach] 100 years [old] God willing (implying they're congratulating for a birthday).