@Sebastian_Lecona, at this time Webflow does not have an internal solution. However, members within the community have written articles related to just this.
Here’s one using AuthPro as the secure tool: Authpro + Webflow to create a Membership portal/protected pages
Here is another one called MemberStack: Memberstack - Free and Paid User Accounts for Webflow
@mistercreate is working on another service with Knack integration. Check out his site here: https://createsomething.io
There are others within the forum here, but those are my recommendations.