It's a bit surprising someone doesn't know a symbol for sats, but in all fairness I've never seen anyone use it. Imho this is the main thing, not Bitcoin.
nostr:nevent1qqs8m50kdu66p9x2p46kg4zgfxv37rhpv4vm8f5t66r8henqqpj2easpzpmhxue69uhkummnw3ezumt0d5hsyg8uw2hyhng5zjk58sp0z6f297le6vw7r8j4z4mw3va6zskjhqtdhcpsgqqqqqqszj86pp