How to spell UBNSCE correctly?

"Ubnsce" is likely a misspelling of "unce's" or "bunsec". For clarity, if referring to the abbreviation for "ounces", use "oz" instead of "unce's". As for "bunsec", it might be better to rewrite the text or provide more context to find the correct alternative. Proofreading and context comprehension are valuable for minimizing misspellings.