Rwayh-120-ywma-fy-sdwm -

Given the time, a common trick: The answer might be a phrase like or similar, but encoded.

Given the format xxxx-120-xxxx-xx-xxxx , the 120 might be a number (maybe a key or a red herring). Could it be a (since 120 mod 26 = 16? Actually 120 mod 26 = 16, shift 16)? Let’s test first word rwayh shift -16 (or +10): rwayh-120-ywma-fy-sdwm

Given the lack of clarity, the most reasonable assumption is that this is a and the intended plaintext might be something like "idk what this means" but that's guesswork. Given the time, a common trick: The answer

This appears to be a coded or obfuscated phrase, possibly using a cipher like Atbash (where A ↔ Z, B ↔ Y, etc.), a simple shift cipher (Caesar), or a substitution pattern. Actually 120 mod 26 = 16, shift 16)

Alternatively, try the string first: mwsd-yf-amwy-120-yh awr — still not clear.

It looks like you've provided a string: rwayh-120-ywma-fy-sdwm .