Public university only requiring you to take at least 1 test of MUET, so what is the band you get they don't wanna know it. At tertiary school there are still some courses a bit likely MUET. Unless you are top student who wish to get band 6 in order to match your 4.0 pointer.

Sorry for dint explain it properly. Several courses do need you pass your MUET with any band(the minimum requirement), except those high level courses.(I forgot what courses do need to such high requirement) So the band 6 really important for entering U? I'm emphasize on moderation, my MUET result is band 4 only

As i said, you only need to take MUET test once as 1 of the requirement to enter U. You only need retake it after entering U if ur band is lower than 3. I don't know what kind of test already but i heard people said those candidate required to have public speaking.
Honestly the marks set in MUET test are unaffair. I still remember last time my score is 180( minimum marks for band 4). Some of my friends get less 1 mark 179, so she get band 3. She felt unsatisfied with the result so she went retake again, wasting 60 bucks(don't know the accurate price jor).