Yes, but you might have to do it with a Freedom of Information request. If it (the pay scale) is judged to amount to personal data, they might try not to. If the council website has the names of staff and the job they do (E.g.) Joe Bloggs Financial Officer they might not tell you the NJC scale for the Financial Officer is and hence know their salary range because you would could know from the website who it applies to.
Note that the NJC scale is just that - a range of salaries with an entry point and a mx value that somebody can progress to based on performance etc. It isn't the actual salary which will be in scale range. The Council might just quote the scale number. or SCP. See the pdf Local Government Services pay agreement 2020-21 here
So if you were told for example Gardening staff SCP 6 -8 it would mean their salary would be in the range £19,698 to £20,493
Note that CLerk's have the their own bands LC1 to LC4 These still use NJC scales LC2 covers SCP 26- 38 which means a salary range of £30,451 to £41,881