P60 and child benefit charge - self assessment or not?

If on paper my salary is approx £51000, but on a 22-23 P60, the figure in the box under "pay and income tax" marked with an asterisk is below £50000, does this mean the high income CB charge does not apply? The P60 states "the figures marked * should be used for your tax return if you get one". Trying to figure out if a self assessment is needed or not, it's very confusing. Does it go on your salary or the figure marked * on the P60 for that tax year??

Hi Sarah Purcell,
Its based on the figure on the P60 as this is what the employer submits to HMRC.
Thank you,