“shssp” is not a standard English word, so there is no specific correct pronunciation. However, if you want to try to pronounce it, you could break it down into individual sounds. For example, you might say each letter separately as “es-aitʃ-es-es-pi”. Or you could try to give it a made-up pronunciation like “shuship” or “shahsahp”. But keep in mind that these are just creative attempts as there is no established way to pronounce this string of letters.