nostr:nprofile1qqswtctxy3xeg3szwfxqrvu6fdd8nrpgkx83ds50z4qkad8dt70yhwspr4mhxue69uhkummnw3ezuur9w3exku3wdejhgtmhd9kxcmmhqyt8wumn8ghj7un9d3shjtnswf5k6ctv9ehx2aqpzfmhxue69uhhqatjwpkx2urpvuhx2ucpzz3cm, if you are currently using Primal on mobile, your key will be found in Settings > Keys. Top one on that page is your public key, bottom one is your private key that you need for logging into other Nostr apps.