How do I show that I am getting pleasure?

Okay random question, so my Bf and I plan on having sex this weekend. But the last time I've had sex I was raped. I was 14 and now I'm 18.

I'm a bit scared and excited to do it with him.

But my question is how do I show him I'm getting pleasure from what he is doing? I'm embarrassed moan or make load nosies..... I've never had a man make me feel good. Wtf do I do 😂?! Pls don't judge me just wanting advice

Edit: we are using condoms and lube. My other question is how the tf do I make myself orgasm?! He has been doing some oral and fingering and I don't orgasm. I've given him BJs and he has came.