You can access your TRS several ways.

It is normally accessible through your employer intranet.  If you have access to this e.g. ESR Self Service you can view your statement using the link, normally under a Pensions heading.

Your TRS is also held securely on a dedicated NHS website. To view your statement Log-in or Register at Login – Total Rewards Statement (totalrewardstatements.nhs.uk)

If when you are on either site you cannot find an Annual Benefit/Pension Statement and it just says “We have unfortunately not been able to produce…” then you need to contact NHSBSA (Pensions) and tell them this.  They will then produce a manually calculated one.  This can take up to four months.  Their telephone number is 0300 3301 346.