How long to wait to first contact her, after having talked face to face already once?

So I meat this girl at a social event, talked a little (I could only stay at the begining).

Did not ask her number, or anything (since I sayed I don’t want to date anyone, altough she really sparked my interest), but she asked some friends about me at that event.

Few days later, she appeared as friend suggestion on social media and I sent her a request, which she accepted same day.

Thinking about writing her, but don’t want to seem needy. I did not even want to date anyone and if I had not meat her face to face, I would probably not have had anyone to want to talk to (I am single btw).

How long should I wait now before contacting her?

UPDATE: wrote her. She read it but did not respond yet.
Guess move on🤷‍♂️