Take off characters

Hi guys.

I have the following problem
I need to take off from a string all the dots that might be in.
For Example, If I have something like B.1.2.3.4 I need to do something that gives me back B1234
I started to do some concatenate, but the problem is that I don’t have the same lengh in every cell and I have more than 89.000 lines like that.
Is there something that I can do to do it quickly?

Thanks a lot for your help.

Greetings

Oooooohhh... I fell so stupid sometimes, hahahaha

Thanks a lot, have a nice day

Best regards