The phrase "to post a profile" means to create and share information about yourself or someone else on a website or platform, typically for others to view and learn more about you. Full definition
You will not have to go in search of a hot Latin American girl, they will come in search of you by posting your profile in the dating website. (internationaldatingtips.com)
He launched his website in 2001 and it operates like other dating sites with members posting profiles for others to see. (dailymail.co.uk)
We suggest that you visit at least some popular dating sites then post your profiles with photos of yourself. (datingjewishnow.com)