@chayy24 If you are trying to install the rasa using VS code, then check your VS code and Build tools for the same or install the latest VS code.
More info please follow this thread from starting and follow the issue as per your need: Windows installtion of Rasa x - #14 by nik202
@chayy24 I will recommend using the latest rasa open source if you are only interested in rasa open-source.
create a project folder rasa
1. conda create -name “Your_Environment_Name” python=3.8 or python==3.7
2. conda activate Your_Environment_Name
3. pip install pip==20.2 or go with latest
4. pip install rasa-sdk==2.8.1
5. pip install rasa==2.8.0
6. rasa init follow the instructions
7. running rasa type rasa shell
8. for training the bot rasa train
9. In new separate terminal for custom action i.e action.py run rasa run actions
If you found any dependencies try install them only which shows >= only.
Further, if you are unable to install or get any errors share the screenshot. Good Luck!