I applaud you for raising the topics of claps!
I have a system — generally I give 10–20 claps. I rarely give 50 claps. I never give “one” solitary clap — that feels slightly odd to me…
Btw, I suspect there is a clap limit in place. I sometimes use up my quota — this is why I limit my claps to 20 or so. After 24 hours, I can usually clap again. When I run out of claps, I write comments. I have never hit a comment quota!!