Significance of A Level Resits in Scottish Flexible Degree System

They don't care if you meet module prerequisites via resit or not.

I doubt history modules would even require A-level History honestly. Many history degrees don't require A-level History.

You're really overthinking this I think...

What if your goal became to transition to studying History at honours level and graduate with a degree in History? Would they not care about the prerequisite grades and mandatory subjects even then?

They don't care if you meet module prerequisites via resit or not.

I doubt history modules would even require A-level History honestly. Many history degrees don't require A-level History.

You're really overthinking this I think...

Would they care if you met the prerequisites for Computer Science to take it in first year? Could you do the modules and then progress with it to honours even though you didn’t meet the regular requirements?

What do the MODULE prerequisites say?

I suspect for CS they would require A-level Maths or an equivalent module and you would need that to be able to take it.

For CS it seems they require only A in A level Maths for any of the year 1 modules and then the next modules just require you having completed the modules before it.

On the Entry requirements page for CS Bsc however it says you need A in A level maths and a pass in one other maths/science subject for entry.

If the module requirements are only A level Maths, am I likely to be allowed to progress to second year and honours even without the other Maths/Science subject listed as a requirement for entry on the course page? As long as I complete the first year modules? If so that is good news.

Harder to say here because they may have a maximum number of people who can be on that course due to facilities and space limitations (i.e. only having X number of seats in the main CS computer lab). Also CS tends to be a very popular and competitive course (whereas history tends to be somewhat under-subscribed and less reliant on physical space available in facilities rather than library access) and so may be less likely to agree to allow someone not meeting the formal degree requirements switch into the course after starting.

As previously advised, if you want to do a degree in XYZ, apply to that course directly while meeting the requirements. Universities generally aren't going to facilitate "backdooring" into a popular programme by someone who doesn't meet the requirements, after they start on another programme at the university.

If you don't know what degree you want to do or don't meet the requirements for direct entry, take a gap year and retake/take whatever subjects you need to meet those requirements.