Please indicate what is your mobo and your current version of bios.
You can obtain the bios version with the CPU-Z program.
The BIOS update varies slightly from one brand to another. Some observations to take into account:
There is some risk in updating the bios, especially if done incorrectly. Make sure you fully understand what you are going to do. Do it with respect but without fear.
Read carefully the instructions regarding your mobo.
The biggest risk is that the electricity in your home is gone. Avoid as much as possible this happens (do not connect any powerful device in the process ...).
In the case of having an update option inside windows or outside windows, choose "out of windows" to avoid any process (i.e. windows update) interrupting the process.
Most bios updates can be performed directly, but there are some cases in which an intermediate version update has to be performed.