I can not Install AnkhSVN -Subversion Support for Visual Studio 2019,
I have tried to Install It, It says Version is Invalid for VS2019
I use VS2019 Professional
The original AnkhSVN project developed by CollabNet is now abandoned and does not support Visual Studio 2019 now (the project is inactive for more than 17 months). As an alternative, consider migrating to VisualSVN that is now completely free for use on non-domain computers (no registration required) and provides about the same functionality compared with AnkhSVN (some users consider VisualSVN to be better for their use cases).
Migrating from AnkhSVN to VisualSVN is a straightforward process. The most recent VisualSVN 7.1 and VisualSVN 6.5 releases add support for multiple working copies within a single solution, and this makes the migration practically instant and painless for almost all users. See the article KB58: Migrating from AnkhSVN to VisualSVN for instructions and the article KB7: Using Multiple Working Copies in VisualSVN if your solution projects span across multiple working copies.
Note that the workarounds suggested in the accepted answer may cause overall Visual Studio destabilization and do not make AnkhSVN compatible with Visual Studio 2019. See the comments under these answers:
BTW, according to this post, those hacky workarounds do not work anymore.
DISCLAIMER: I am a support engineer with VisualSVN Team.