A lot when I was youngger. I lived abroad and I dont know if I somehow stood out as a minority in that country or guys are generally more forward than in my own culture.
I remember guys following me on my way to uni or back asking if I had a boyfriend. Cars slowed down next to me and tried to talk to me and offer me a ride. A guy threw a message to me from behind during a lecture with his phone number in front of the lecturer and 300 students. I didnt even look back, it made me feel very awkward and just wanted to leave asap.
Once I was in a shopping mall during Christmas, there was a guy dressed as a Santa having photos taken with kids. The photographer was very kind and asked if I wanted a photo with my own digital camera for free, I said OK. Then the Santa became really chatty with me and told me how beautiful I was. I thought he was an old man but turned out he was only 22 even younger than me, he asked me if we could meet again but I said no.
Once I was having lunch in a food court, I was married by then but a random guy just came up and said hi, he told me I was beautiful, I said thank you, to be honest I didnt know what else to say, he told me his name, shook my hands and left. I was in shock wondering what juat happened.
When I was backpacking in Europe several strangers tried to follow me and chat with me, tell me I was pretty and even offer to show me around. This happened in different locations and different countries. It happened 3 times in one musuem alone in Paris by different people, even when I had my headphones on. Some got angry when I politely told them to leave me alone. It became really annoying.
I dont mind compliments but sometimes it is hard to tell if they are genuine or not, specially if its from random guys. Of course I also had compliments from ladies too. These days more from ladies and other mums, usually telling me they like my outfits and I look good in them.
On the other hand, I have also experienced a lot more random open insults, mostly due to racism and sexism.